Guide for Authors

All journal information and instructions compiled in one document (PDF) in just one mouse-click Author information pack

INTRODUCTION
• Types of article
• Language
• Submission checklist
BEFORE YOU BEGIN
• Ethics in publishing
• Declaration of interest
• Submission declaration and verification
• Contributors
• Authorship
• Changes to authorship
• Clinical trial results
• Copyright
• Role of the funding source
• Open access
• Informed consent and patient details
• Submission
PREPARATION
• Double-blind review
• Article structure
• Essential title page information
• Abstract
• Keywords
• Artwork
• Tables
• References
• Video
• Supplementary material
• RESEARCH DATA
AFTER ACCEPTANCE
• Proofs
AUTHOR INQUIRIES



Jornal de Pediatria is the official publication of the Brazilian Society of Pediatrics (Sociedade Brasileira de Pediatria – SBP). It has been continuously published by the SBP since 1934.

Jornal de Pediatria is indexed in the following databases: MEDLINE, Web of Science, Scopus, SciELO, LILACS, EMBASE/Excerpta Medica, Sociedad Iberoamericana de Información Científica (SIIC) Data Bases, Medical Research Index, and University Microfilms International.Jornal de Pediatria publishes articles in the field of clinical investigation. Exceptionally, basic research articles are also accepted. Types of article

Jornal de Pediatria accepts submissions of original articles, review articles, and letters to the editor.Original articles include reports on controlled and randomized studies, screening and diagnostic studies, and other descriptive and intervention studies, as well as reports on basic research carried out with laboratory animals. Manuscripts in this category should not exceed 3,000 words, 30 references and four tables and figures.Editorials, comments and review articles are published under invitation. Authors of unsolicited editorials, comments, and review articles must submit an outline to the Editorial Board before submitting the manuscript.Editorials and comments, which usually make reference to selected articles, are solicited from experts in the field. The Editorial Board may consider the publication of unsolicited comments.Review articles are systematic, critical assessments of the literature concerning topics of clinical relevance, with emphasis on aspects such as cause and prevention of diseases, diagnosis, treatment, and prognosis. Usually, professionals of recognized expertise are invited to write review articles. Meta-analyses are included in this category. Jornal de Pediatria will also consider unsolicited review articles. For that, authors must submit an outline to the Editorial Board before submitting the manuscript. Review articles should not exceed 6,000 words, not including references and tables. A minimum of 30 up-to-date references should be cited.Letters to the editor usually express an opinion, discuss or criticize articles previously published in Jornal de Pediatria. Letters should not exceed 1,000 words and six references. Whenever possible, a response from the authors of the article to which the letter refers will be published along with the letter.Special articles do not fall under any of the other categories. They are considered to have special relevance and will be reviewed following special criteria. Special articles are not limited in terms of length or number of references. Language

Papers can be submitted in either Portuguese or English. Articles are published in English in the print version, and in English and Portuguese in the website (html and pdf).American spelling is used. Therefore, authors are advised to use the language with which they feel most comfortable and confident that they will communicate more clearly. If a certain paper has been originally written in Portuguese, the authors should not submit an English version, unless it is a professional quality translation. Submission checklist

You can use this list to carry out a final check of your submission before you send it to the journal for review. Please check the relevant section in this Guide for Authors for more details.Ensure that the following items are present:

One author has been designated as the corresponding author with contact details:

  • E-mail address;

  • Full postal address;

All necessary files have been uploaded:

Manuscript

:

  • Include keywords

  • All figures (include relevant captions)

  • All tables (including titles, description, footnotes)

  • Ensure all figure and table citations in the text match the files provided

  • Supplemental files (where applicable)

Further considerations

  • Manuscript has been 'spell checked' and 'grammar checked'

  • All references mentioned in the Reference List are cited in the text, and vice versa

  • Permission has been obtained for use of copyrighted material from other sources (including the Internet)

  • Relevant declarations of interest have been made

  • Journal policies detailed in this guide have been reviewed.

For further information, visit our Support Center.

Ethics in publishing

Please see our information pages on Ethics in publishing and Ethical guidelines for journal publication.

Declaration of interest

All authors must disclose any financial and personal relationships with other people or organizations that could inappropriately influence (bias) their work. Examples of potential conflicts of interest include employment, consultancies, stock ownership, honoraria, paid expert testimony, patent applications/registrations, and grants or other funding. If there are no conflicts of interest then please state this: 'Conflicts of interest: none'. More information.

Submission declaration and verification

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 'Multiple, redundant or concurrent publication' section of our ethics policy 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. To verify originality, your article may be checked by the originality detection service CrossCheck.

Contributors

Each author is required to declare his or her individual contribution to the article: all authors must have materially participated in the research and/or article preparation, so roles for all authors should be described. The statement that all authors have approved the final article should be true and included in the disclosure.

Authorship

All authors should have made substantial contributions to all of the following: (1) the conception and design of the study, or acquisition of data, or analysis and interpretation of data, (2) drafting the article or revising it critically for important intellectual content, (3) final approval of the version to be submitted.

Changes to authorship

Authors are expected to consider carefully the list and order of authors before submitting their manuscript and provide the definitive list of authors at the time of the original submission. Any addition, deletion or rearrangement of author names in the authorship list should be made only before the manuscript has been accepted and only if approved by the journal Editor. To request such a change, the Editor must receive the following from the corresponding author: (a) the reason for the change in author list and (b) written confirmation (e-mail, letter) from all authors that they agree with the addition, removal or rearrangement. In the case of addition or removal of authors, this includes confirmation from the author being added or removed.
Only in exceptional circumstances will the Editor consider the addition, deletion or rearrangement of authors after the manuscript has been accepted. While the Editor considers the request, publication of the manuscript will be suspended. If the manuscript has already been published in an online issue, any requests approved by the Editor will result in a corrigendum.

Clinical trial results

In line with the position of the International Committee of Medical Journal Editors, the journal will not consider results posted in the same clinical trials registry in which primary registration resides to be prior publication if the results posted are presented in the form of a brief structured (less than 500 words) abstract or table. However, divulging results in other circumstances (e.g., investors' meetings) is discouraged and may jeopardise consideration of the manuscript. Authors should fully disclose all posting in registries of results of the same or closely related work.

Reporting clinical trials
Randomized controlled trials should be presented according to the CONSORT guidelines. At manuscript submission, authors must provide the CONSORT checklist accompanied by a flow diagram that illustrates the progress of patients through the trial, including recruitment, enrollment, randomization, withdrawal and completion, and a detailed description of the randomization procedure. The CONSORT checklist and template flow diagram are available online.

Registration of clinical trials
Registration in a public trials registry is a condition for publication of clinical trials in this journal in accordance with International Committee of Medical Journal Editors recommendations. Trials must register at or before the onset of patient enrolment. The clinical trial registration number should be included at the end of the abstract of the article. A clinical trial is defined as any research study that prospectively assigns human participants or groups of humans to one or more health-related interventions to evaluate the effects of health outcomes. Health-related interventions include any intervention used to modify a biomedical or health-related outcome (for example drugs, surgical procedures, devices, behavioural treatments, dietary interventions, and process-of-care changes). Health outcomes include any biomedical or health-related measures obtained in patients or participants, including pharmacokinetic measures and adverse events. Purely observational studies (those in which the assignment of the medical intervention is not at the discretion of the investigator) will not require registration.

Copyright

Upon acceptance of an article, authors will be asked to complete a 'Journal Publishing Agreement' (see more information on this) to assign to the Brazilian Society of Pediatrics (Sociedade Brasileira de Pediatria – SBP) the copyright in the manuscript and any tables, illustrations or other material submitted for publication as part of the manuscript (the "Article") in all forms and media (whether now known or later developed), throughout the world, in all languages, for the full term of copyright, effective when the Article is accepted for publication. . 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.

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.

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.

Open access

This journal is a peer reviewed, subsidized open access journal where the Brazilian Society of Pediatrics (Sociedade Brasileira de Pediatria – SBP) pays for the publishing costs incurred by the journal. Authors do not have to pay any Article Processing Charge or Open Access Publication Fee.Every peer-reviewed research article appearing in this journal will be published open access. This means that the article is universally and freely accessible via the internet in perpetuity, in an easily readable format immediately after publication.Access rightsAll articles published open access will be immediately and permanently free for everyone to read, download, copy and distribute.User rights

Permitted reuse is defined by the following user license(s): Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)
For non-commercial purposes, lets others distribute and copy the article, and to include in a collective work (such as an anthology), as long as they credit the author(s) and provided they do not alter or modify the article.

Elsevier Publishing Campus
The Elsevier Publishing Campus (www.publishingcampus.com) is an online platform offering free lectures, interactive training and professional advice to support you in publishing your research. The College of Skills training offers modules on how to prepare, write and structure your article and explains how editors will look at your paper when it is submitted for publication. Use these resources, and more, to ensure that your submission will be the best that you can make it.

Language (usage and editing services)
Please write your text in good English (American English is used). Authors who feel their English language manuscript may require editing to eliminate possible grammatical or spelling errors and to conform to correct scientific English may wish to use the English Language Editing service available from Elsevier's WebShop.

Informed consent and patient details

Studies on patients or volunteers require ethics committee approval and informed consent, which must be documented in the paper. Appropriate consents, permissions and releases must be obtained where an author wishes to include case details or other personal information or images of patients and any other individuals in an Elsevier publication. Written consents must be retained by the author and copies of the consents or evidence that such consents have been obtained must be provided to Elsevier on request. For more information, please review the Elsevier Policy on the Use of Images or Personal Information of Patients or other Individuals. Unless you have written permission from the patient (or, where applicable, the next of kin), the personal details of any patient included in any part of the article and in any supplementary materials (including all illustrations and videos) must be removed before submission.

Submission

Our online submission system guides you stepwise through the process of entering your article details and uploading your files. The system converts your article files to a single PDF file used in the peer-review process. Editable files (e.g., Word, LaTeX) are required to typeset your article for final publication. All correspondence, including notification of the Editor's decision and requests for revision, is sent by e-mail.

Submit your article
Please submit your article via https://www.evise.com/profile/api/navigate/JPED.

Double-blind review

This journal uses double-blind review, which means the identities of the authors are concealed from the reviewers, and vice versa. More information is available on our website. To facilitate this, please include the following separately:
Title page (with author details): This should include the title, authors' names, affiliations, acknowledgements and any Declaration of Interest statement, and a complete address for the corresponding author including an e-mail address.
Blinded manuscript (no author details): The main body of the paper (including the references, figures, tables and any acknowledgements) should not include any identifying information, such as the authors' names or affiliations.

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 on processing the article. 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). 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.
To avoid unnecessary errors you are strongly advised to use the 'spell-check' and 'grammar-check' functions of your word processor.

Article structure

Subdivision - unnumbered sections

The main text in original articles should contain the following sections, indicated by a subtitle: Introduction, Methods, Results, and Discussion.The sections in review articles may vary depending on the topic. We suggest that authors include a brief introduction, in which they explain (from the perspective of the medical literature) the importance of the review for the practice of pediatrics. It is not necessary to describe how data were selected and collected. The conclusions section should correlate the main ideas in the review to possible clinical applications, keeping generalizations within the scope of the subject under review. Introduction

State the objectives of the work and provide an adequate background, avoiding a detailed literature survey or a summary of the results. Make it brief, including only references that are strictly relevant to underscore the importance of the topic and to justify the study. At the end of the introduction, research objectives must be clearly stated. Material and methods

Provide sufficient detail to allow the work to be reproduced. Methods already published should be indicated by a reference: only relevant modifications should be described. This section should describe the study population, the sample being analyzed, and the selection criteria; it should also clearly define the variables under study, and describe in detail the statistical methods employed (including appropriate references about statistical methods and software). Procedures, products, and equipment should be described in sufficient detail so as to allow reproduction of the study. A statement concerning approval by the research ethics committee (or equivalent) of the institution in which the work was carried out must be included. Results

Study results should be presented in a clear, objective manner, following a logical sequence. Information contained in tables or figures should not be repeated in the text. Use figures rather than tables to present extensive data. Discussion

Results should be interpreted and compared with previously published data, emphasizing new and important aspects of the present study. Discuss the implications of the findings and the limitations of the study, as well as the need for additional research. Conclusions should be presented at the end of the Discussion section, taking into consideration the purpose of the work. Relate the conclusions to the initial study objectives, avoiding statements that are not supported by the findings and giving similar emphasis to positive and negative findings that have similar scientific relevance. If relevant, include recommendations for further research. Essential title page information

The title page should contain all the following information:a) concise and informative title. Avoid unnecessary terms and abbreviations; also avoid reference to the site and/or city where the work was carried out;b) short title of not more than 50 characters including spaces to appear on the headers;c) authors’ names (first and last names and middle initials);d) authors’ highest academic degree;e) e-mail address of all authors;f) if available, URL to electronic curriculum vitae ("Currículo Lattes" for Brazilian authors, ORCID, etc.);g) the specific contribution of each author to the study;h) statement of conflicts of interest (write “nothing to declare” or clearly disclose any financial or other interests which could cause embarrassment if revealed after the publication of the article);i) institution or service with which the work is associated for indexing in Index Medicus/MEDLINE;j) name, address, telephone number, fax number, and e-mail of corresponding author;k) name, address, telephone number, fax number, and e-mail of author in charge of pre-publication contacts;l) funding sources, or name of institutions or companies providing equipment and materials, if applicable;m) word count of the main text not including abstract, acknowledgements, references, tables and legends to figures;n) abstract word count;o) number of tables and figures. Abstract

A concise and factual abstract is required. The abstract should state briefly the purpose of the research, the principal results and major conclusions. An abstract is often presented separately from the article, so it must be able to stand alone. For this reason, References should be avoided, but if essential, then cite the author(s) and year(s). Also, non-standard or uncommon abbreviations should be avoided, but if essential they must be defined at their first mention in the abstract itself.The abstract should have no more than 250 words or 1,400 characters. Do not include words that could identify the institution or city where the study was performed, to facilitate blind review. All information in the abstract must accurately reflect the content of the article. The abstract should be structured as described below:Abstract for original articlesObjective: State why the study was initiated and any initial hypotheses. Precisely define the main purpose of the study; only the most relevant secondary objectives should be listed.Method: Describe the study design (if appropriate, state whether the study is randomized, blinded, prospective, etc.), setting (if appropriate, describe the level of care, i.e., primary, secondary or tertiary, private clinic or public institution, etc.), patients or participants (selection criteria, number of cases at the beginning and at the end of the study, etc.), interventions (include essential information, such as methods and duration of the study), and criteria used to measure the outcomes.Results: Describe the most important findings, confidence intervals, and statistical significance of the findings.

Conclusions: Only describe conclusions that reflect the purpose of the study and that are supported by your findings. Discuss possible applications of the findings, with equal emphasis on positive and negative findings that have similar scientific merit.Abstract for review articlesObjective: Explain why the review was performed, stating whether it focuses on a special factor, such as disease etiology, prevention, diagnosis, treatment or prognosis.Sources: Describe all sources of information, defining databases and years researched. Briefly state the criteria used to select articles for review and to assess the quality of information.Summary of the findings: State the main quantitative or qualitative findings.Conclusions: State your conclusions and their clinical application, keeping generalizations within the scope of the subject under review. Keywords

Immediately after the abstract, provide a maximum of 6 keywords, using American spelling and avoiding general and plural terms and multiple concepts (avoid, for example, 'and', 'of'). Be sparing with abbreviations: only abbreviations firmly established in the field may be eligible. These keywords will be used for indexing purposes.Please use Medical Subject Headings (MeSH), available at http://www.nlm.nih.gov/mesh/meshhome.html. Whenever adequate descriptors are not available you may use new terms. Abbreviations

Use abreviations sparingly. All abreviations must be spelled out at their first mention in the text. Abbreviations that are not standard in the field of pediatrics must be defined in a footnote to be placed on the first page of the article. Avoid the use of abbreviations in the abstract; those that are unavoidable in the abstract must be defined at their first mention there, as well as in the footnote. Ensure consistency of abbreviations throughout the article. Acknowledgements

Collate acknowledgements in a separate section at the end of the article before the references and do not, therefore, include them on the title page, as a footnote to the title or otherwise. List here those individuals who provided help during the research (e.g., providing language help, writing assistance or proof reading the article, etc.).

Only individuals or institutions that contributed significantly to the study, but are not qualified for authorship, should be mentioned. Individuals cited in this section must agree in writing to the inclusion of their names, since readers may infer their endorsement of the conclusions of the study. Formatting of funding sources
List funding sources in this standard way to facilitate compliance to funder's requirements:

Funding: This work was supported by the National Institutes of Health [grant numbers xxxx, yyyy]; the Bill & Melinda Gates Foundation, Seattle, WA [grant number zzzz]; and the United States Institutes of Peace [grant number aaaa].

It is not necessary to include detailed descriptions on the program or type of grants and awards. When funding is from a block grant or other resources available to a university, college, or other research institution, submit the name of the institute or organization that provided the funding.

If no funding has been provided for the research, please include the following sentence:

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

Units
Follow internationally accepted rules and conventions: use the international system of units (SI). If other units are mentioned, please give their equivalent in SI.

Math formulae
Please submit math equations as editable text and not as images. Present simple formulae in line with normal text where possible and use the solidus (/) instead of a horizontal line for small fractional terms, e.g., 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).

Footnotes

Footnotes should not be used. Rather, incorporate the pertaining information in the main text. Artwork

Image manipulation
Whilst it is accepted that authors sometimes need to manipulate images for clarity, manipulation for purposes of deception or fraud will be seen as scientific ethical abuse and will be dealt with accordingly. For graphical images, this journal is applying the following policy: no specific feature within an image may be enhanced, obscured, moved, removed, or introduced. Adjustments of brightness, contrast, or color balance are acceptable if and as long as they do not obscure or eliminate any information present in the original. Nonlinear adjustments (e.g. changes to gamma settings) must be disclosed in the figure legend.

Electronic artwork
General points
• 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 published version.
• Submit each illustration as a separate file.
A detailed guide on electronic artwork is available.
You are urged to visit this site; some excerpts from the detailed information are given here.
Formats
If your electronic artwork is created in a Microsoft Office application (Word, PowerPoint, Excel) then please supply 'as is' in the native document format.
Regardless of the application used other than Microsoft Office, when your electronic artwork is finalized, please 'Save as' or convert the images to one of the following formats (note the resolution requirements for line drawings, halftones, and line/halftone combinations given below):
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.
Please do not:
• 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.

Color artwork

Please make sure that artwork files are in an acceptable format (TIFF (or JPEG), EPS (or PDF), or MS Office files) and with the correct resolution. If, together with your accepted article, you submit usable color figures then Elsevier will ensure, at no additional charge, that these figures will appear in color online (e.g., ScienceDirect and other sites) regardless of whether or not these illustrations are reproduced in color in the printed version. Illustration services
Elsevier's WebShop 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.

Figure captions
Ensure that each illustration has a caption. Supply captions separately, not attached to the figure. A caption should comprise a brief title (not on the figure itself) and a description of the illustration. Keep text in the illustrations themselves to a minimum but explain all symbols and abbreviations used.

Tables

Please submit tables as editable text and not as images. Tables can be placed either next to the relevant text in the article, or on separate page(s) at the end. Number tables consecutively in accordance with their appearance in the text and place any table notes below the table body. Be sparing in the use of tables and ensure that the data presented in them do not duplicate results described elsewhere in the article. Please avoid using vertical rules and shading in table cells.

References

Citation in text
Please ensure that every reference cited in the text is also present in the reference list (and vice versa). Any references cited in the abstract must be given in full. Unpublished results and personal communications are not recommended in the reference list, but may be mentioned in the text. If these references are included in the reference list they should follow the standard reference style of the journal and should include a substitution of the publication date with either 'Unpublished results' or 'Personal communication'. Citation of a reference as 'in press' implies that the item has been accepted for publication.

Reference links
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.

A DOI can be used to cite and link to electronic articles where an article is in-press and full citation details are not yet known, but the article is available online. A DOI is guaranteed never to change, so you can use it as a permanent link to any electronic article. An example of a citation using DOI for an article not yet in an issue is: VanDecar J.C., Russo R.M., James D.E., Ambeh W.B., Franke M. (2003). Aseismic continuation of the Lesser Antilles slab beneath northeastern Venezuela. Journal of Geophysical Research, https://doi.org/10.1029/2001JB000884. Please note the format of such citations should be in the same style as all other references in the paper.

Web references
As a minimum, the full URL should be given and the date when the reference was last accessed. Any further information, if known (DOI, author names, dates, reference to a source publication, etc.), should also be given. Web references can be listed separately (e.g., after the reference list) under a different heading if desired, or can be included in the reference list.

Data references
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.

Users of Mendeley Desktop can easily install the reference style for this journal by clicking the following link:
http://open.mendeley.com/use-citation-style/jornal-de-pediatria
When preparing your manuscript, you will then be able to select this style using the Mendeley plug-ins for Microsoft Word or LibreOffice.

Reference style

References should follow the Vancouver style, also known as the Uniform Requirements style, which is based largely on an American National Standards Institute style adapted by the U.S. National Library of Medicine (NLM) for its databases.Authors should consult Citing Medicine, The NLM Style Guide for Authors, Editors, and Publishers (http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi?book=citmed) for information on the recommended formats for a variety of reference types. Authors may also consult sample references (http://www.nlm.nih.gov/bsd/uniform_requirements.html), a list of examples extracted from or based on Citing Medicine for easy general use; these sample references are maintained by NLM.References must be numbered consecutively in the order in which they appear in the text, identified by superscript numbers. Do not use automatic numbering, footnotes or end notes for references.Unpublished articles that have been accepted for publication may be included as references if the name of the journal is included followed by “in press.”Unpublished observations and personal communications should not be cited as references; if this information is essential for the understanding of the article, it may be cited within the text, followed by the observations in parentheses “unpublished observation” or “personal communication.”For more detailed information, refer to the Uniform Requirements for Manuscripts Submitted to Biomedical Journals, available at http://www.icmje.org/.Below we present some examples of the model adopted by Jornal de Pediatria: Reference style

Articles in journals 1. Up to six authors: Araújo LA, Silva LR, Mendes FA. Digestive tract neural control and gastrointestinal disorders in cerebral palsy. J Pediatr (Rio J). 2012;88:455-64. 2. More than six authors:Ribeiro MA, Silva MT, Ribeiro JD, Moreira MM, Almeida CC, Almeida-Junior AA, et al. Volumetric capnography as a tool to detect early peripheric lung obstruction in cystic fibrosis patients. J Pediatr (Rio J). 2012;88:509-17.3. Organization as author:Mercier CE, Dunn MS, Ferrelli KR, Howard DB, Soll RF; Vermont Oxford Network ELBW Infant Follow-Up Study Group. Neurodevelopmental outcome of extremely low birth weight infants from the Vermont Oxford network: 1998-2003. Neonatology. 2010;97:329-38.4. No author given:Informed consent, parental permission, and assent in pediatric practice. Committee on Bioethics, American Academy of Pediatrics. Pediatrics. 1995;95:314-7.5. Article published electronically ahead of the print version:Carvalho CG, Ribeiro MR, Bonilha MM, Fernandes Jr M, Procianoy RS, Silveira RC. Use of off-label and unlicensed drugs in the neonatal intensive care unit and its association with severity scores. J Pediatr (Rio J). 2012 Oct 30. [Epub ahead of print]Books

Blumer JL, Reed MD. Principles of neonatal pharmacology. In: Yaffe SJ, Aranda JV, eds. Neonatal and Pediatric Pharmacology. 3rd ed. Baltimore: Lippincott, Williams and Wilkins; 2005. p. 146-58.Academic studies

Borkowski MM. Infant sleep and feeding: a telephone survey of Hispanic Americans [dissertation]. Mount Pleasant, MI: Central Michigan University; 2002.CD-ROM

Anderson SC, Poulsen KB. Anderson’s electronic atlas of hematology [CD-ROM]. Philadelphia: Lippincott Williams and Wilkins; 2002.Homepage/website

Journal abbreviations source
Journal names should be abbreviated according to the List of Title Word Abbreviations.

Video

Elsevier accepts video material and animation sequences to support and enhance your scientific research. Authors who have video or animation files that they wish to submit with their article are strongly encouraged to include links to these within the body of the article. This can be done in the same way as a figure or table by referring to the video or animation content and noting in the body text where it should be placed. All submitted files should be properly labeled so that they directly relate to the video file's content. In order to ensure that your video or animation material is directly usable, please provide the files in one of our recommended file formats with a preferred maximum size of 150 MB in total. Any single file should not exceed 50 MB. Video and animation files supplied will be published online in the electronic version of your article in Elsevier Web products, including ScienceDirect. 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. Note: since video and animation cannot be embedded in the print version of the journal, please provide text for both the electronic and the print version for the portions of the article that refer to this content.

Supplementary material

Supplementary material such as applications, images and sound clips, can be published with your article to enhance it. Submitted supplementary items are published exactly as they are received (Excel or PowerPoint files will appear as such online). Please submit your material together with the article and supply a concise, descriptive caption for each supplementary file. If you wish to make changes to supplementary material during any stage of the process, please make sure to provide an updated file. Do not annotate any corrections on a previous version. Please switch off the 'Track Changes' option in Microsoft Office files as these will appear in the published version.

RESEARCH DATA

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.

Data linking
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).

Mendeley Data
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 statement
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.

Availability of accepted article
This journal makes articles available online as soon as possible after acceptance. This concerns the accepted article (both in HTML and PDF format), which has not yet been copyedited, typeset or proofread. A Digital Object Identifier (DOI) is allocated, thereby making it fully citable and searchable by title, author name(s) and the full text. The article's PDF also carries a disclaimer stating that it is an unedited article. Subsequent production stages will simply replace this version.

Proofs

One set of page proofs (as PDF files) will be sent by e-mail to the corresponding author 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 the free Adobe Reader, version 9 (or higher). Instructions on how to annotate PDF files will accompany the proofs (also given online). The exact system requirements are given at the Adobe site.
If you do not wish to use the PDF annotations function, you may list the corrections (including replies to the Query Form) and return them to Elsevier in an e-mail. Please list your corrections quoting line number. If, for any reason, this is not possible, then mark the corrections and any other comments (including replies to the Query Form) on a printout of your proof and scan the pages and return via e-mail. Please use this proof only for checking the typesetting, editing, completeness and correctness of the text, tables and figures. Significant changes to the article as accepted for publication will only be considered at this stage with permission from the Editor. We will do everything possible to get your article published quickly and accurately. It is important to ensure that all corrections are sent back to us in one communication: please check carefully before replying, as inclusion of any subsequent corrections cannot be guaranteed. Proofreading is solely your responsibility.



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