Published Online: July 29, 2015. doi:10.1001/jamasurg.2015.1258.
Study concept and design: Kim, de Virgilio.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Kim, Nassiri, Ferebee, Kaji.
Critical revision of the manuscript for important intellectual content: Kim, de Virgilio, Hamilton, Saltzman.
Statistical analysis: Nassiri, Ferebee, Kaji, Hamilton.
Administrative, technical, or material support: Nassiri, de Virgilio.
Study supervision: Kim, de Virgilio, Saltzman.
Conflict of Interest Disclosures: None reported.
Previous Presentation: This paper was presented at the 86th Annual Meeting of the Pacific Coast Surgical Association; February 19, 2015; Monterey, California.