Accepted for Publication: July 3, 2013.
Published Online: February 19, 2014. doi:10.1001/jamasurg.2013.4398.
Study concept and design: Delgado, Yokell, Wang.
Acquisition of data: Yokell, Wang.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Delgado.
Critical revision of the manuscript for important intellectual content: Yokell, Staudenmayer, Spain, Hernandez-Boussard, Wang.
Statistical analysis: Delgado, Yokell, Hernandez-Boussard.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grant UL1 RR025744 from the National Center for Research Resources and the National Center for Advancing Translational Sciences, National Institutes of Health (Drs Delgado and Wang) and award K12HL109009 from the National Heart, Lung, and Blood Institute (Dr Delgado).
Role of the Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, or interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Disclaimer: The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health or the National Heart, Lung, and Blood Institute.
Previous Presentations: This study was presented at the 2013 Society for Academic Emergency Medicine Annual Meeting; May 17, 2013; Atlanta, Georgia; and at the AcademyHealth Annual Research Meeting; June 25, 2013; Baltimore, Maryland.
Correction: This article was corrected on May 1, 2014, for an omission in the Funding/Support section.