SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field.
SJR is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and a qualitative measure of the journal’s impact.
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The Pediatric Cardiac Surgery Annual is a companion to Seminars in Thoracic and Cardiovascular Surgery. The Annual focuses on the most significant developments in pediatric cardiac surgery, providing coverage in new procedural and technological advances. Each annual volume contains submissions from leading experts in the field, and from by prominent surgeons who presented their findings at the AATS Annual Meeting from the previous year.