AJOG MFM is a journal focused on the latest research in the specialty of maternal-fetal medicine, or high-risk pregnancy. It includes practice-changing studies on maternal complications; fetal complications including prenatal diagnosis, ultrasound and genetics; as well as prenatal care, intrapartum care, and postpartum issues. The Journal is a forum for trusted peer-reviewed research, preferentially randomized trials and meta-analyses of these trials, to supply researchers and clinicians with up-to-date guidance on how to best manage women with high-risk pregnancies and their unborn children.
- Every submission must include a title page with a disclosure statement and a signed statement of authorship form. This requirement applies to ALL article types.
- The editors encourage the supplementary use of multimedia components such as PowerPoint, additional images, or video clips. Color figures and images are free.
- Manuscript word counts only applies to the main text (not counting the title page, condensation, short title, AJOG at a Glance, acknowledgements, references, tables, figures, legends, or supplementary material).
- Continuous line numbers (1st through last page) must appear on manuscripts upon submission.
Systematic review and meta-analysis studies: please refer to Systematic Reviews
Translational Research: please refer to Translational ResearchOriginal research manuscripts are limited to 3000 words of main text, must include all items listed under 'Article structure,' including a Title Page, Condensation, Short Title, AJOG at a Glance, and Keywords, and organized as follows:
Structured Abstract - up to 500 words (250-word minimum) with the following required headings:1. Background: an explanation of the basis for the study.
2. Objective(s): the purpose of the study (hypothesis being tested)3. Study Design: the setting for the study, subjects (number and type), treatment or intervention, and type(s) of statistical analysis used
4. Results: the outcome(s) of the study and, if appropriate, their statistical significance5. Conclusion(s): overall significance of the results
Main Text - must be organized into sections and identified with the following headings:Introduction: State concisely the study's purpose and rationale. Present only the background, supported by a limited number of pertinent references necessary for the reader to understand why the study was conducted. Do not include study data or conclusions.
Materials and Methods: Describe briefly, but in sufficient detail to permit others to replicate the study, its plan, patients, experimental animals or other species, materials, and controls; methods and procedures; and statistical method(s) employed. Institutional Review Board (IRB) issues are to be addressed here as stated under "Human and nonhuman experimentation" in the Editorial Policies section above. If the study was exempt from IRB approval, provide an explanation in this section.Results: This section includes detailed findings and must cite, in numerical order, all tables and/or figures, which should supplement, not reiterate, the text. Emphasize only the most important observations. Reserve any comparisons with others' observations for the Comment section (see below)
Structured Discussion/Comment: Do not repeat the details of data presented under Results or present any new data here. Required headings include:1. Principal Findings - a brief statement of the principal findings, limiting claims to those strictly supported by the data, avoiding speculation and overgeneralization. Give equal emphasis to positive and negative findings of equal scientific merit.
2. Results - in the context of what is known3. Clinical Implications - the meaning of the study; eg, hypothesized mechanisms that might explain the outcomes observed and/or the implications for clinicians or policy makers. Indicate whether additional research is required before the information can be confidently used in clinical settings.
4. Research Implications - Unanswered questions; proposals for future research.5. Strengths and Limitations - Strengths and weaknesses of the study, both intrinsically and in relation to other studies, particularly any differences in results.
Additional subheadings - may be included by the authors if appropriate and will facilitate reading.
Examples of a structured discussion can be found in the following papers:1) Vaginal progesterone is as effective as cervical cerclage to prevent preterm birth in women with a singleton gestation, previous spontaneous preterm birth, and a short cervix: updated indirect comparison meta-analysis. Conde-Agudelo A, Romero R, Da Fonseca E, O'Brien JM, Cetingoz E, Creasy GW, Hassan SS, Erez O, Pacora P, Nicolaides KH. Am J Obstet Gynecol. 2018 Apr 7. pii: S0002-9378(18)30243-6. doi: 10.1016/j.ajog.2018.03.028. https://www.ajog.org/article/S0002-9378(18)30243-6/fulltext
2) Are amniotic fluid neutrophils in women with intraamniotic infection and/or inflammation of fetal or maternal origin? Gomez-Lopez N, Romero R, Xu Y, Leng Y, Garcia-Flores V, Miller D, Jacques SM, Hassan SS, Faro J, Alsamsam A, Alhousseini A, Gomez-Roberts H, Panaitescu B, Yeo L, Maymon E. Am J Obstet Gynecol. 2017 Dec;217(6):693.e1-693.e16. doi: 10.1016/j.ajog.2017.09.013. https://www.ajog.org/article/S0002-9378(17)31128-6/fulltext3) Is middle cerebral artery Doppler related to neonatal and 2-year infant outcome in early fetal growth restriction? Stampalija T, Arabin B, Wolf H, Bilardo CM, Lees C; TRUFFLE investigators. Am J Obstet Gynecol. 2017 May;216(5):521.e1-521.e13. doi: 10.1016/j.ajog.2017.01.001. Epub 2017 Jan 10. https://www.ajog.org/article/S0002-9378(17)30001-7/fulltext
4) GlucoStabilizer™ software-guided insulin dosing improves intrapartum glycemic management in women with diabetes. Dinglas C, Muscat J, Adams T, Peragallo-Dittko V, Vintzileos A, Heo HJ. Am J Obstet Gynecol. 2018 May 8. pii: S0002-9378(18)30395-8. doi: 10.1016/j.ajog.2018.05.003 " https://www.ajog.org/article/S0002-9378(18)30395-8/fulltext
Translational science is typically presented in the form of an original research manuscript; however, the only type of non-clinical research considered must be translational in nature and contain biological implications for obstetrics and gynecology. Basic science without direct clinical relevance will not be considered; please see Editorial Policies for examples.
These invited articles provide concise reviews on a topic in which the author has expertise. The manuscript should be comprehensive and balanced, but not exhaustive. Expert Reviews must be evidence based but may include some expert opinion and recommendations. The goal is to provide a concise update on the state of the art and guidelines for clinical care.
Expert Reviews are limited to 3500 words of main text, must include all items listed under 'Article structure,' including a Title Page, Condensation, Short Title, AJOG at a Glance, and Keywords, and include an unstructured abstract (1 paragraph, no categories) of no more than 350 words.Subheadings to separate and identify sections of text should be unique to the topic; the 4 prescribed subheadings required for research articles do not apply. To prevent such subheadings from occupying many lines on a page, they should be as short as possible, not exceeding approximately 6 words, and preferably 1 to 4 words.
Each article in this category provides a comprehensive and exhaustive systematic review of the literature related to the topic, collating all relevant evidence meeting pre-specified eligibility criteria. Systematic reviews may not be combined with other manuscript types.
Authors must adhere to the PRISMA and MOOSE guidelines (for guidance see Editorial Policies).Systematic Review manuscripts are limited to 5000 words of main text, must include all items listed under 'Article structure;' including a Title page, Condensation, Short Title, AJOG at a Glance, and Keywords. Organize the manuscript text as follows:
- Title: The title should identify the report as systematic review or metaanalysis.
- Data sources (including years searched)
- Study eligibility criteria (study design, populations, and interventions [if applicable])
- Study appraisal and synthesis methods
Abstract:Include a structured abstract containing no more than 350 words in accordance with PRISMA guidelines, and with the following headings:
- Main text: Headings and subheadings in the main text should include the following; note that subheadings may be modified to best represent the specific report.
- Introduction (rationale, explain impetus for Review)
- Eligibility criteria, information sources, search strategy
- Study selection
- Data extraction
- Assessment of risk of bias
- Data synthesis
- Study selection
- Study characteristics
- Risk of bias of included studies
- Synthesis of results
- Main findings
- Strengths and limitations
- Comparison with existing literature
- Conclusions and Implications
The Journal does not publish case reports. Case reports may not be submitted as another article type as these will NOT BE considered or returned.
Editorials are written or solicited by the editors. Spontaneous submissions are not considered for publication.
Queries about submission requirements may be addressed to the managing editor:
|Donna L. Stroud • email@example.com |
If a report by any or all of the same author(s) has previously been published or is currently under preparation that deals with the same subjects, animals, or laboratory experiments, and deals with a similar subject as the submitted manuscript, the author(s) are to inform the editors in a cover letter about the similarities and differences of the reports. The editors may request that you upload such reports before further review. This requirement also applies to manuscripts in which subjects, animals, laboratory experiments, or data have been added to those reported previously. Please ensure that the final manuscript includes references for pertinent articles published prior to the publication of the AJOG MFM paper.Submission of an article implies that the work described has not been published previously (except in the form of an abstract or as part of a published lecture or academic thesis or as an electronic preprint, see https://www.elsevier.com/postingpolicy), that it is not under consideration for publication elsewhere, that its publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out, and that, if accepted, it will not be published elsewhere including electronically in the same form, in English or in any other language, without the written consent of the copyright-holder.All submissions are subject to review with iThenticate Professional Plagiarism Prevention. http://www.ithenticate.com.Allegations of scientific misconduct and breaches of the ethical conduct of research will be assessed by the Editors and referred to the sponsoring Institution for review, inquiry, and/or investigation, and disposition. Examples of inappropriate acts include but are not limited to: fabrication, falsification, plagiarism, repetitive publication, obfuscation of significant research results, violating requirements for experimentation with human subjects or animals, failing to comply with authorship requirements and failing to report significant conflicts of interest. Honest mistakes and differences of opinion about experimental design or interpretation of results do not represent inappropriate acts.AJOG will make decisions about retraction of published work or other actions (such as sanctions) based upon evaluation of the information provided by the Institution and other information available to the Journal.Authors will be asked to identify the sponsoring Institution(s) which is responsible for the integrity of the scientific work and compliance with the regulations to protect human subjects and animals from research risk(s). When the research is sponsored from multiple Institutions, authors will be asked to identify the Institution which will take the lead in handling a potential allegation. If the sponsoring Institution does not have a policy to deal with allegations of scientific misconduct or noncompliance with regulatory issues referred to above, the matter will be referred to a Committee appointed by the Editors. Human and nonhuman experimentation
Authors must follow the ethical standards for human experimentation established in the Declaration of Helsinki (World Medical Association Declaration of Helsinki: recommendations guiding physicians in biomedical research involving human subjects. JAMA 1997;277:925-6). The editors assume that a manuscript emanating from an institution is submitted with the approval of the requisite authority. The authors of reports of human experimentation that require local institutional approval must have obtained this approval before the experiment was started; upon request of the Journal editors, the author(s) must provide copies of the appropriate documentation. Institutional approval must be indicated in the Materials and Methods section of the submitted manuscript. If the study is exempt from Institutional Review Board approval, an explanation must be provided under Materials and Methods.
For images in which the identity of the patient is potentially identifiable, authors must have obtained written permission from the patient(s) on whom the report is based. The author is is responsible for filing this in a secure location. The scope of the consent should allow the author to explicitly disclose the information to Elsevier and for Elsevier to republish the information in print and electronic format including journal web and social media sites. Authors must attest to having obtained written consent in the manuscript and must be prepared to provide this documentation upon the editors’ request.All research studies, including those involving patients, patient records, research participants or databases, require ethics committee approval (or documented exemption from the Human Subjects Committee) and informed consent (or documented waiver of consent), both of which must be documented in the paper. Studies on patients, patient records, or volunteers require ethics committee approval and informed consent, both of which must be documented in the paper.
Trial and research guidelines
Authors must adhere to the following guidelines when formulating the study.
- All Randomized Clinical Trials require registration with clinicaltrials.gov (or other registered authority), prior to enrollment. On the manuscript title page include the: 1) Date of registration, 2) Date of initial participant enrollment, 3) Clinical trial identification number, and 4) URL of the registration site.
- Authors are to consult the updated CONsolidated Standards Of Reporting Trials (CONSORT Statement): Schulz KF, Altman DG, Moher D, CONSORT Group (2010). CONSORT 2010 Statement: updated guidelines for reporting parallel group randomised trials. PLoS Med 7(3): e1000251. https://doi.org/10.1371/journal.pmed.1000251. http://www.consort-statement.org A flowchart as a figure must be submitted with the manuscript.• Systematic review or metaanalysis. Authors are to consult the PRISMA Statement: Moher D, Liberati A, Tetzlaff J, Altman DG, and the PRISMA Group. Preferred Reporting Items for Systematic reviews and Meta-Analyses: the PRISMA Statement. Ann Intern Med 2009;151:264-9. http://www.prisma-statement.org
• Metaanalysis or systematic review of observational studies. Authors are to consult the MOOSE Statement: Stroup DF, Berlin JA, Morton SC, et al, for the Meta-analysis Of Observational Studies in Epidemiology [MOOSE] group. Metaanalysis Of Observational Studies in Epidemiology: a proposal for reporting. JAMA 2000;283:2008-12. http://www.consort-statement.org/resources/downloads/other-instruments• Diagnostic test(s). Authors are to consult STAndards for the Reporting of Diagnostic accuracy studies (STARD Statement): Bossuyt PM, Reitsma JB, Bruns DE, et al, for the STARD Group. Towards complete and accurate reporting of studies of diagnostic accuracy: the STARD Initiative. Clin Chem 2003;49:1-6. http://www.stard-statement.org
• Observational study in epidemiology. Authors are to consult the STROBE Statement: von Elm E, Altman DG, Egger M, Pocock SJ, Gøtzsche PC, Vandenbroucke JP; STROBE Initiative. The STrengthening the Reporting of OBservational studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol 2008;61:344-9. http://www.strobe-statement.org or PLoS Med. 2007 Oct 16;4(10):e296. PMID: 17941714• Health economics. In addition to the general instructions for authors and other guidelines applicable to the study reported in a submitted manuscript (eg, CONSORT guidelines for a randomized controlled trial; see above), authors of health economics manuscripts should consider certain issues specific to such studies and address them in the manuscript and/or submission letter. The checklist specific to this topic must be completed and included with the general submission checklist. https://www.elsevier.com/__data/promis_misc/ajoghealth.pdf
The only type of non-clinical research considered must be translational in nature and contain biological implications for obstetrics and gynecology. Additionally, the direct clinical relevance of every submission is considered when an editorial decision is made. Basic science without direct clinical relevance will not be considered.
Translational science examples
- Ectopic Pregnancy
- Clinical Study: an observational cohort study which shows that patients with a subnormal increase in hCG maternal serum concentration are at increased risk for ectopic pregnancy. [Encouraged submission]
- Translational Science (bench to bedside): proteomic analysis of maternal plasma shows differentially-expressed proteins in patients with ectopic vs. normal pregnancy. Or, an experiment in which the fallopian tubes are ligated in pregnant animals and hCG determinations are measured in maternal serum. [Encouraged submission]
Translational Science (bedside to community): analysis of techniques to enhance the adoption of best practices in caring for women with ectopic pregnancy [Encouraged submission]
- Basic Science: a description of the glycosylation of protein structure of hCG (even if it is based on the purification of hCG from patients with ectopic pregnancies). [DISCOURAGED submission]
- Clinical Study: an observational study in which a particular biomarker measured in the mid-trimester increases or decreases the risk for spontaneous preterm labor and delivery. [Encouraged submission]
- Translational Science: the transcriptome, proteome, genome, or metabolome of patients who subsequently have spontaneous preterm labor and delivery. [Encouraged submission]
- Basic Science: protein sequence of a particular biomarker. [DISCOURAGED submission]
Conflict of interest statement
Authors of all submissions must include a conflict of interest statement.
Examples:- The authors report no conflict of interest.
- R.J.X, M.F., and L.Y.V.R. are employed by the Curette Company, Worthingham, MI. The remaining authors report no conflict of interest.
- R.H. received research funding from PharmaCo, San Antonio, TX, for participating in a multicenter drug trial in 2011-12 S.B. reports no conflict of interest.
- This research was funded, in part, by a grant from the OxyContin Association (A.R.Z.)
- A.E.B. was on the Speaker's Bureau for PharmaCo in 2012.
Manuscripts written or developed by anyone other than the listed authors should name those individuals in the Acknowledgment(s) section and state their relationship to any commercial enterprise.
Submission of an article implies that the work described has not been published previously (except in the form of an abstract, a published lecture or academic thesis, see 'Multiple, redundant or concurrent publication' for more information), that it is not under consideration for publication elsewhere, that its publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out, and that, if accepted, it will not be published elsewhere in the same form, in English or in any other language, including electronically without the written consent of the copyright-holder.
Please note that preprints can be shared anywhere at any time, in line with Elsevier's sharing policy. Sharing your preprints e.g. on a preprint server will not count as prior publication (see 'Multiple, redundant or concurrent publication' for more information).
Use of inclusive language
Inclusive language acknowledges diversity, conveys respect to all people, is sensitive to differences, and promotes equal opportunities. Articles should make no assumptions about the beliefs or commitments of any reader, should contain nothing which might imply that one individual is superior to another on the grounds of race, sex, culture or any other characteristic, and should use inclusive language throughout. Authors should ensure that writing is free from bias, for instance by using 'he or she', 'his/her' instead of 'he' or 'his', and by making use of job titles that are free of stereotyping (e.g. 'chairperson' instead of 'chairman' and 'flight attendant' instead of 'stewardess').
For transparency, we encourage authors to submit an author statement file outlining their individual contributions to the paper using the relevant CRediT roles: Conceptualization; Data curation; Formal analysis; Funding acquisition; Investigation; Methodology; Project administration; Resources; Software; Supervision; Validation; Visualization; Roles/Writing - original draft; Writing - review & editing. Authorship statements should be formatted with the names of authors first and CRediT role(s) following. More details and an example
Named authors and contributors
Every author must provide a signed Statement of Authorship form upon submission. This requirement applies to all article types including, but not limited to: editorials, sketches, letters, and replies.
Authorship requirements for submissions to the Journal must conform to the Uniform Requirements for Manuscripts Submitted to Biomedical Journals from the International Committee of Medical Journal Editors. http://www.icmje.org.Each author named in the byline must qualify by having participated actively and sufficiently in the study reported. The basis for inclusion consists of 2 factors: 1) substantial contributions to (a) the concept and design or analysis and interpretation of data and (b) the author’s having drafted the manuscript or revised it critically for important intellectual content; and 2) approval by each author of the version of the manuscript submitted. All conditions (1a, 1b, and 2) must be met. Others contributing substantively to the work, including participants in collaborative trials and persons involved solely in data collection, should be recognized separately in the Acknowledgment(s) section. The corresponding author must confirm that all bylined authors fulfilled all conditions described here.
Authorship by individuals employed by industry
AJOG MFM values high-quality primary original research reports of industry-sponsored trials and requires appropriate attribution of authors, which may include individuals directly employed by industry (that is, companies producing drugs, devices, tests, equipment or companies with an interest in the topic of the article). However, as of October 1, 2015, AJOG will no longer consider authorship by individuals directly employed by industry for the following categories of manuscripts: Expert review, Systematic review. An individual is considered employed by industry if at least 25% of anticipated annual income is derived from a single manufacturer (as defined above). Individuals not employed by industry may submit manuscripts in these areas with the understanding that the AJOG financial disclosure policy is strictly adhered to.
Changes to authorship
This policy concerns the addition, deletion, or rearrangement of author names in the authorship of accepted manuscripts:
Before the accepted manuscript is published in an online issue: Requests to add or remove an author, or to rearrange the author names, must be sent to the Journal Manager from the corresponding author of the accepted manuscript and must include: (a) the reason the name should be added or removed, or the author names rearranged, (b) written confirmation (e-mail, fax, letter) from all authors that they agree with the addition, removal or rearrangement, and (c) written confirmation from that author that he/she meets the criteria for authorship. In the case of addition or removal of authors, this includes confirmation from the author being added or removed. Requests that are not sent by the corresponding author will be forwarded by the Journal Manager to the corresponding author, who must follow the procedure as described above. Note that: (1) Journal Managers will inform the Journal Editors of any such requests and (2) publication of the accepted manuscript in an online issue is suspended until authorship has been agreed.
After the accepted manuscript is published in an online issue: Any requests to add, delete, or rearrange author names will follow the same policies as noted above and require an erratum.
Article transfer service
This journal is part of our Article Transfer Service. This means that if the Editor feels your submission is more suitable in one of our other participating journals, then you may be asked to consider transferring the manuscript. If you agree, the manuscript will be transferred automatically on your behalf with no need to reformat. More information about this can be found here: https://www.elsevier.com/authors/article-transfer-service.
Upon acceptance of an article, authors will be asked to complete a 'Journal Publishing Agreement' (see more information on this). An e-mail will be sent to the corresponding author confirming receipt of the manuscript together with a 'Journal Publishing Agreement' form or a link to the online version of this agreement.
For gold open access articles: Upon acceptance of an article, authors will be asked to complete an 'Exclusive License Agreement' (more information). Permitted third party reuse of gold open access articles is determined by the author's choice of user license.Author rights
As an author you (or your employer or institution) have certain rights to reuse your work. More information.
Elsevier supports responsible sharing
Find out how you can share your research published in Elsevier journals.
Please visit our Open Access page for more information.
Authors must submit all elements of their manuscripts online at http://ees.elsevier.com/ajog. Hard-copy submissions will NOT be considered or returned. The online system automatically converts source files to a single PDF file of the article, which is used in the peer-review process. Please note that even though manuscript source files are converted to PDF files at submission for the review process, these source files are needed for further processing after acceptance. All correspondence, including notification of the Editor's decision and requests for revision takes place via email.
Submitted manuscripts are screened by Journal staff and editors. For some papers, a decision is made to decline immediately. All others undergo peer review.
Statement of Authorship
Every author on ALL submissions must sign a Statement of Authorship.
Optional: Upon submission, authors may provide the names, institution, and email addresses of 2-3 potential reviewers for editorial consideration. Suggested reviewers may include anyone knowledgeable in the area of study presented. Reviewers should not be mentors or former colleagues, and ideally should not be in the same city as the author (unless there is no person with the needed expertise outside of this city).
Previous submission (unpublished)
Provide a copy of previous peer review comments and a detailed response to each point. This is required for any submission previously submitted to AJOG, optional if previously submitted elsewhere.
Submit your article
Please submit your article via http://ees.elsevier.com/ajog.
Requirements for the preparation of manuscripts
The author(s) accept(s) responsibility that the electronic file is complete and accurate upon submission, revision, and acceptance.
AJOG publishes manuscripts only in American English. This includes using US spelling, punctuation, quotation marks, and decimal points. AJOG editors strongly encourage contributors whose English is not excellent to have their manuscripts edited by a professional translator or native English speaker before submission. Elsevier offers authors two services to help prepare their manuscripts for submission to an English-language journal.
The first service edits your manuscript already written in English to ensure it is in correct scientific English. This process does not change the content of your manuscript but improves understanding and readability for an English-speaking reader. This process takes less than six business days and the cost of an average manuscript is less than $400. Please visit http://webshop.elsevier.com/languageediting/pages/howdoesitwork.html for more details and to upload your manuscript.The second service translates your manuscript from your language (Chinese, Portuguese or Spanish) into either British or American English. This process is carried out by Language experts within your field, and takes less than 11 business days. The average cost is $1,000. Please visit http://webshop.elsevier.com/languageservices/translationservices/pages/howdoesitwork.html for more details and to upload your manuscript.
Please note that these services are not mandatory for publication in an Elsevier journal. Using these services does not guarantee selection for peer review or acceptance, and you are not obligated to submit your edited manuscript to an Elsevier journal. Visit our customer support site.
Use of word processing software
It is important that the file be saved in the native format of the word processor used. The text should be in single-column format. Keep the layout of the text as simple as possible. Most formatting codes will be removed and replaced. In particular, do not use the word processor's options to justify text or to hyphenate words. However, do use bold face, italics, subscripts, superscripts etc. When preparing tables, if you are using a table grid, use only one grid for each individual table and not a grid for each row. If no grid is used, use tabs, not spaces, to align columns. The electronic text should be prepared in a way very similar to that of conventional manuscripts (see also the Guide to Publishing with Elsevier: https://www.elsevier.com/guidepublication). Note that source files of figures, tables and text graphics will be required whether or not you embed your figures in the text. See also the section on Electronic artwork.
Requirements for manuscripts submitted to the Journal generally conform to the Uniform Requirements for Manuscripts Submitted to Biomedical Journals from the International Committee of Medical Journal Editors (http://www.icmje.org).
IMPORTANT: Figures are to be uploaded individually and in separate files (one figure per file). DO NOT embed the figure into the manuscript text file, as this compromises the image quality, creating an unpublishable image (see artwork).
Use of Statistics and Math Formulae
In describing the statistical analyses performed, state which tests were used to evaluate a specific data set. In tables, indicate which statistical test(s) were used to evaluate the data.
Present simple formulae in the line of normal text where possible and use the solidus (/) instead of a horizontal line for small fractional terms, eg, X/Y. In principle, variables are to be presented in italics. Powers of e are often more conveniently denoted by exp. Number consecutively any equations that have to be displayed separately from the text (if referred to explicitly in the text).
Abbreviations, units, proprietary (brand) names, and symbols
Abbreviations should be avoided whenever possible throughout the entire paper and kept to a practical minimum for the ease of reading. Abbreviations are not permitted in the title or abstract. (Upon editor approval, only extremely common abbreviations such as PROM may be permitted). Use only standard abbreviations, the full word or phrase for which an abbreviation stands should precede its first use in the text, with the abbreviation following in parentheses, unless it is a conventional standard unit of measurement.
The use of conventional units of measure is recommended, followed by Système International d'Unités (SI) units in parentheses. For this and other issues of style, authors are advised to consult the current AMA style manual: Iverson C, Christiansen S, Flanagin A, et al. AMA manual of style: a guide for authors and editors. 10th ed. New York, NY: Oxford University Press; 2007.Generic, chemical, and/or proprietary names of drugs may be used. When a generic or chemical name is used, authors may insert the proprietary name in parentheses after the drug's first mention in the text (optional). When a proprietary drug name is used, it should be followed parenthetically (at first mention only) by the full name of the manufacturer and the city and state (US) or the city, province (if appropriate), and non-US country in which its main headquarters are located.Proprietary (brand names) are not permitted in the manuscript title.
Do not insert in any part of the paper the symbol for copyright (©), registered trademark (®), or trademark (TM); if included, they will be removed before publication.
Direct quotations, tables, figures, and any other material that has previously appeared in copyrighted material must be accompanied by written permission for their use from the copyright owner and original author(s) along with complete reference information. Photographs of identifiable persons either must be accompanied by signed releases or all recognizable features must be masked.
Essential title page information
Title page (starting on page 1) - A title page is required for ALL article types. Include the following in sequence:1) Title - Authors are encouraged to use declarative titles that clearly presents the key message of the paper, is concise as possible (approximately 12 words), and is suitable for indexing purposes. DO NOT INCLUDE Abbreviations, proprietary (brand names), or conclusion statements in the manuscript title.
2) Authors - List authors to be credited (byline), including each author's first name, middle initial, and LAST NAME (surname in all capital letters), with highest academic degrees (honorary degrees are not permitted); city or cities, state(s), province (Canada and Australia), and country or countries other than the United States in which the study was conducted; divisional and/or departmental and institutional affiliations of each author at the time the study was performed; for authors not called "Doctor," indicate Ms. or Mr. (All authors must meet authorship criteria as described under 'Named authors and contributors,' and submit a signed Statement of Authorship form upon submission of the manuscript.)
- Present/permanent address. If an author has moved since the work described in the article was done, or was visiting at the time, a 'Present address' (or 'Permanent address') may be indicated as a footnote to that author's name. The address at which the author actually did the work must be retained as the main, affiliation address. Superscript Arabic numerals are used for such footnotes.
4) Funding - List any source(s) of financial support for the research Role of the funding source. You are requested to identify who provided financial support for the conduct of the research and/or preparation of the article and to briefly describe the role of the sponsor(s), if any, in study design; in the collection, analysis and interpretation of data; in the writing of the report; and in the decision to submit the article for publication. If the funding source(s) had no such involvement then this should be stated.5) Clinical Trial Registration - required for all clinical trials, include the clinical trial identification number and the URL of the registration site.
6) Presentation - If the findings of the paper was (or will be) presented at a meeting, include the name of the meeting and its number (eg, "the 24th Annual Scientific Meeting" or "the 12th annual meeting"), the organization presenting the meeting, the city and state or city and non-US country (for Canada and Australia, include the province) in which the meeting was held, and the month, inclusive dates (not only the date on which the specific presentation was made), and year of the meeting.7) Disclaimer - if appropriate, such as for authors employed by the Federal Government or Armed Forces.
8) Corresponding Author - The corresponding author's contact information (who will handle correspondence at all stages of submission, revision, publication, and post-publication.) Contact details must be kept up to date by the corresponding author. Include the individual's full name, address, phone number(s), and email address.9) Word count - Include the word count of both the abstract and the main text at the bottm of the title page. Word counts apply only to the manuscript text (not counting the title page, condensation, acknowledgments, references, tables, figure legends, and figures).
Condensation, Short Title, AJOG at a Glance, and Keywords
On the next page supply:
B. What are the key findings?C. What does this study add to what is already known?
On the next page supply:
An abstract that provides sufficient detail for the editors, reviewers, and readers to clearly understand the main message of your paper. Abstracts are freely available on search engines such as Scopus®, PubMed®, etc., and is a key component in assessing the quality of an article.The type(s) of non-human animals or other species used in an investigation must be named in the abstract. If percentages are used, include the numerator/denominator in parenthesis. P-values should be included for claims of statistical significance. Abbreviations and references are NOT permitted in the abstract (structured nor unstructured).
Refer to the Article Types section of this document for the appropriate abstract format. Abbreviations and references are NOT permitted in the abstract (structured nor unstructured).
- The use of abbreviations should be avoided whenever possible throughout the paper for the ease of reading.
- The type(s) of non-human animals or other species used in an investigation must be named in the Title, Abstract, and Materials and Methods sections of the manuscript.
- The editors require that manuscripts be organized into sections with headings as described under the Article types section of this document.
Highlights are optional yet highly encouraged for this journal, as they increase the discoverability of your article via search engines. They consist of a short collection of bullet points that capture the novel results of your research as well as new methods that were used during the study (if any). Please have a look at the examples here: example Highlights.
This section thanks those other than the authors who have made substantive contributions to the manuscript, including participants in collaborative trials and persons providing only data collection or assistance with preparing the paper for submission or publication. Name only those who have made substantive contributions to the study (see “Editorial Policies”).
GlossaryA glossary of terms should be provided, listing definitions that may not be well known by Obstetricians and Gynecologists, or the general AJOG reader. Abbreviations should be avoided whenever possible.
There is no limit on the number of references (unless noted under 'Article Types' of this document) and preference is given to those that cite primary sources rather than review articles.
Numbering and order
All references are to be numbered sequentially as they fall in the text. For references that are not cited in the main text but only within table(s) or figure(s), begin such numbering after the numbers in the main reference list.
Do not include the first author of the cited reference in the text, in parentheses or otherwise, except as part of the text itself (Smith et al found…. or In a study by Smith et al, ....).Reference style
In general references follow AMA style. For up to 6 authors, list all; for 7 or more authors, list the first 3 + et al.
Examples:Journal article - Journal names should be abbreviated according to the List of Title Word Abbreviations:
http://www.issn.org/services/online-services/access-to-the-ltwa/.Nageotte MP, Vander Wal B. Achievement of the 30-minute standard in obstetrics-can it be done? Am J Obstet Gynecol 2012;206:104-7.
Book chapter or sectionKim M. Amenorrhea: primary and secondary. In: Zuspan FP, Quilligan ED, eds. Handbook of obstetrics, gynecology, and primary care. St Louis, MO: Mosby; 1998:3-10.
Personal communications; unpublished dataIf essential, these may be cited, within parentheses, at an appropriate location in the text, but not as numbered references. Written, signed permission from individual(s) quoted must accompany the manuscript upon submission.
for additional examples see any recent issue of the Journal.Reference Sources
Abstracts of scientific meetings can be cited; however; once the complete work is published, the article citation is preferred.
Provisional patent applications may not be cited as a reference.
Increased discoverability of research and high quality peer review are ensured by online links to the sources cited. In order to allow us to create links to abstracting and indexing services, such as Scopus, CrossRef and PubMed, please ensure that data provided in the references are correct. Please note that incorrect surnames, journal/book titles, publication year and pagination may prevent link creation. When copying references, please be careful as they may already contain errors. Use of the DOI is encouraged.
Please ensure that the words ‘this issue’ are added to any references in the list (and add any citations in the text) to other articles in the same Special Issue.
Websites may or may not be appropriate sources for citation; e.g., websites that serve as repositories of genetic information maintained by NIH, NCI, and the National Library of Medicine are acceptable.
Submit tables at the conclusion of the manuscript, do not place tables in the body of the manuscript text. Create all tables as double-spaced text in Microsoft Word. Any table submitted as a *.jpg, *.tif, or *.pdf file will NOT be considered.
Identify each table with a brief title (as few words as possible; reserve abbreviations for the key) and with an Arabic number (Table 1, Table, 2, etc.) in the order in which it is cited in the text. Each column, including the first, must have a heading. Put all explanatory matter in footnotes, including the spelling out of any nonstandard abbreviations used in the table.For footnote symbols within tables, follow the style and order noted on pages 90-95 of the AMA style guide, 10th edition. For placement, start in the upper left corner and work across, left to right, and down, line by line.
If a table, in whole or in part, was derived from copyrighted material, a footnote at the bottom of the table must credit the original source, cited fully. Any copyrighted material must be accompanied by a letter or completed permission form at the time of manuscript submission.
Elsevier accepts electronic supplementary material to support and enhance your scientific research. Supplementary files offer the author additional possibilities to publish supporting applications, high-resolution images, background datasets, sound clips and more. Supplementary files supplied will be published online alongside the electronic version of your article in Elsevier Web products, including ScienceDirect: http://www.sciencedirect.com. In order to ensure that your submitted material is directly usable, please provide the data in one of our recommended file formats. Authors should submit the material in electronic format together with the article and supply a concise and descriptive caption for each file. For more detailed instructions please visit our artwork instruction pages at https://www.elsevier.com/artworkinstructions.
If there is more than one appendix, they should be identified as A, B, etc. Formulae and equations in appendices should be given separate numbering: Eq. (A.1), Eq. (A.2), etc.; in a subsequent appendix, Eq. (B.1) and so on. Similarly for tables and figures: Table A.1; Fig. A.1, etc.
Figure legends and caption
On the final page of the manuscript supply the following for each figure:
The figure number, figure title, and a figure caption (1- or 2-sentence description). Explain any arrowhead, letter, or other symbol used to identify parts of a photograph, drawing, or other illustration. Spell out any abbreviations used. In photomicrographs, explain the internal scale and identify the method of staining, if appropriate. If a figure was previously published by any of the bylined authors or others, insert a statement that permission has been granted and by whom, as well as a full citation of the original publication.
Color is encouranged and there is no charge for the use of color figures.
- Submit each figure individually (one figure per file).
- DO NOT copy and paste or embed images into the manuscript text file or in a slide presentation. This compromises image quality making it unpublishable.
- Preferred image formats are: EPS, TIFF, or JPEG.
- Number figures sequentially in order as they appear in the text, with Arabic numbers (Figure 1, Figure 2, Figure 3A, etc).
- Assign to each figure a brief title (containing as few words as possible and reserving abbreviations for the legend).
Videos and computer graphics
Authors are encouraged to submit videos and computer-generated graphics; eg, a slide presentation with or without animation and sound. Although the publisher will not edit any video or computer graphic, the editors and reviewers may suggest changes. Any patient identification must be removed or masked. If music is utilized, appropriate permission is required.
Please supply 'stills' with your files: you can choose any frame from the video or animation or make a separate image. These will be used instead of standard icons and will personalize the link to your video data.For more detailed instructions please visit our video instruction pages at https://www.elsevier.com/artworkinstructions.Videos and computer graphics accompanying a manuscript that is declined for publication will not be accepted separately. If the manuscript is accepted for publication, the presentation will be in the electronic version of your article, and in Elsevier Web products, including ScienceDirect: http://www.sciencedirect.com.
Elsevier's WebShop (http://webshop.elsevier.com/illustrationservices) offers Illustration Services to authors preparing to submit a manuscript but concerned about the quality of the images accompanying their article. Elsevier's expert illustrators can produce scientific, technical and medical-style images, as well as a full range of charts, tables and graphs. Image 'polishing' is also available, where our illustrators take your image(s) and improve them to a professional standard. Please visit the website to find out more.
You are urged to visit the electronic artwork site (https://www.elsevier.com/artworkinstructions); some excerpts from the detailed information are given here:
• Make sure you use uniform lettering and sizing of your original artwork.
• Embed the used fonts if the application provides that option.
• Aim to use the following fonts in your illustrations: Arial, Courier, Times New Roman, Symbol, or use fonts that look similar.
• Number the illustrations according to their sequence in the text.
• Use a logical naming convention for your artwork files.
• Provide captions to illustrations separately.
• Size the illustrations close to the desired dimensions of the printed version.
• Submit each illustration as a separate file.
EPS (or PDF): Vector drawings, embed all used fonts.
TIFF (or JPEG): Color or grayscale photographs (halftones), keep to a minimum of 300 dpi.
TIFF (or JPEG): Bitmapped (pure black & white pixels) line drawings, keep to a minimum of 1000 dpi.
TIFF (or JPEG): Combinations bitmapped line/half-tone (color or grayscale), keep to a minimum of 500 dpi.
• Supply files that are optimized for screen use (e.g., GIF, BMP, PICT, WPG); these typically have a low number of pixels and limited set of colors;
• Supply files that are too low in resolution;
• Submit graphics that are disproportionately large for the content.
This journal encourages you to cite underlying or relevant datasets in your manuscript by citing them in your text and including a data reference in your Reference List. Data references should include the following elements: author name(s), dataset title, data repository, version (where available), year, and global persistent identifier. Add [dataset] immediately before the reference so we can properly identify it as a data reference. The [dataset] identifier will not appear in your published article.
Reference management software
Most Elsevier journals have their reference template available in many of the most popular reference management software products. These include all products that support Citation Style Language styles, such as Mendeley. Using citation plug-ins from these products, authors only need to select the appropriate journal template when preparing their article, after which citations and bibliographies will be automatically formatted in the journal's style. If no template is yet available for this journal, please follow the format of the sample references and citations as shown in this Guide. If you use reference management software, please ensure that you remove all field codes before submitting the electronic manuscript. More information on how to remove field codes from different reference management software.
Users of Mendeley Desktop can easily install the reference style for this journal by clicking the following link:
When preparing your manuscript, you will then be able to select this style using the Mendeley plug-ins for Microsoft Word or LibreOffice.
Include interactive data visualizations in your publication and let your readers interact and engage more closely with your research. Follow the instructions here to find out about available data visualization options and how to include them with your article.
This journal encourages and enables you to share data that supports your research publication where appropriate, and enables you to interlink the data with your published articles. Research data refers to the results of observations or experimentation that validate research findings. To facilitate reproducibility and data reuse, this journal also encourages you to share your software, code, models, algorithms, protocols, methods and other useful materials related to the project.
Below are a number of ways in which you can associate data with your article or make a statement about the availability of your data when submitting your manuscript. If you are sharing data in one of these ways, you are encouraged to cite the data in your manuscript and reference list. Please refer to the "References" section for more information about data citation. For more information on depositing, sharing and using research data and other relevant research materials, visit the research data page.
If you have made your research data available in a data repository, you can link your article directly to the dataset. Elsevier collaborates with a number of repositories to link articles on ScienceDirect with relevant repositories, giving readers access to underlying data that gives them a better understanding of the research described.
There are different ways to link your datasets to your article. When available, you can directly link your dataset to your article by providing the relevant information in the submission system. For more information, visit the database linking page.For supported data repositories a repository banner will automatically appear next to your published article on ScienceDirect.
In addition, you can link to relevant data or entities through identifiers within the text of your manuscript, using the following format: Database: xxxx (e.g., TAIR: AT1G01020; CCDC: 734053; PDB: 1XFN).
This journal supports Mendeley Data, enabling you to deposit any research data (including raw and processed data, video, code, software, algorithms, protocols, and methods) associated with your manuscript in a free-to-use, open access repository. During the submission process, after uploading your manuscript, you will have the opportunity to upload your relevant datasets directly to Mendeley Data. The datasets will be listed and directly accessible to readers next to your published article online.
For more information, visit the Mendeley Data for journals page.
Data in Brief
You have the option of converting any or all parts of your supplementary or additional raw data into one or multiple data articles, a new kind of article that houses and describes your data. Data articles ensure that your data is actively reviewed, curated, formatted, indexed, given a DOI and publicly available to all upon publication. You are encouraged to submit your article for Data in Brief as an additional item directly alongside the revised version of your manuscript. If your research article is accepted, your data article will automatically be transferred over to Data in Brief where it will be editorially reviewed and published in the open access data journal, Data in Brief. Please note an open access fee of 600 USD is payable for publication in Data in Brief. Full details can be found on the Data in Brief website. Please use this template to write your Data in Brief.
To foster transparency, we encourage you to state the availability of your data in your submission. This may be a requirement of your funding body or institution. If your data is unavailable to access or unsuitable to post, you will have the opportunity to indicate why during the submission process, for example by stating that the research data is confidential. The statement will appear with your published article on ScienceDirect. For more information, visit the Data Statement page.
One set of page proofs (as PDF files) will be sent by e-mail to the corresponding author (if we do not have an e-mail address then paper proofs will be sent by post) or, a link will be provided in the e-mail so that authors can download the files themselves. Elsevier now provides authors with PDF proofs which can be annotated; for this you will need to download Adobe Reader version 9 (or higher) available free from http://get.adobe.com/reader. Instructions on how to annotate PDF files will accompany the proofs (also given online). The exact system requirements are given at the Adobe site: http://www.adobe.com/products/reader/tech-specs.html.
Use of the Digital Object Identifier
The Digital Object Identifier (DOI) may be used to cite and link to electronic documents. The DOI consists of a unique alpha-numeric character string which is assigned to a document by the publisher upon the initial electronic publication. The assigned DOI never changes. Therefore, it is an ideal medium for citing a document, particularly 'Articles in press' because they have not yet received their full bibliographic information. Example of a correctly given DOI (in URL format; here an article in the journal Physics Letters B):
When you use a DOI to create links to documents on the web, the DOIs are guaranteed never to change.
Statements and opinions published in articles and communications therein are held to be those of the author(s) and not necessarily of the editors or publisher of the Journal. The editors and publisher disclaim any responsibility or liability for such material. Neither the editors nor the publisher guarantees, warrants, or endorses any product or service advertised in the Journal or guarantees any claim made by the manufacturer of such a product or service.
Visit the Elsevier Support Center to find the answers you need. Here you will find everything from Frequently Asked Questions to ways to get in touch.
You can also check the status of your submitted article or find out when your accepted article will be published.