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Circulation Research
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About OnLine First


All original scientific articles that are accepted in a given week are posted online within 6 to 10 working days, regardless of the print issue in which they are due to appear. Individual and institutional subscribers can log on to http://circres.ahajournals.org and access proof versions of the Original Contributions, Reports, UltraRapid Communications, and Research Commentaries that were accepted in the previous week. OnLine First allows for a marked reduction in the time from acceptance to appearance in the public domain, from the current mean of 5 to 7 weeks to 1 to 2 weeks. The embargo date for OnLine First articles is 4:00 PM EST on the date of online posting. Editorials, MiniReviews, and Reviews are not included in OnLine First.

As always, the Editors welcome your comments and feed- back. You can reach us at circulation.research{at}circresearch.com, or via the "Feedback" utility on the journal’s Web site.