Accepted for Publication: August 18, 2014.
Published Online: March 4, 2015. doi:10.1001/jamasurg.2014.3484.
Study concept and design: Malas, Zarkowsky, Qazi, Schneider, Black, Segev, Freischlag.
Acquisition, analysis, or interpretation of data: Malas, Canner, Hicks, Arhuidese, Qazi.
Drafting of the manuscript: Malas, Canner, Hicks, Qazi, Black.
Critical revision of the manuscript for important intellectual content: Malas, Hicks, Arhuidese, Zarkowsky, Schneider, Segev, Freischlag.
Statistical analysis: Canner, Hicks, Arhuidese, Zarkowsky.
Obtained funding: Malas.
Administrative, technical, or material support: Hicks, Arhuidese, Qazi, Black.
Study supervision: Malas, Schneider, Freischlag.
Conflict of Interest Disclosures: None reported.
Disclaimer:Dr Freischlag was the editor of JAMA Surgery at the time this manuscript was accepted and had no role in the review or editorial decision process of this article.