Published Online: November 26, 2014. doi:10.1001/jamasurg.2014.307.
Study concept and design: Tseng, Orloff.
Acquisition, analysis, or interpretation of data: Tseng, Orloff.
Drafting of the manuscript: Tseng.
Critical revision of the manuscript for important intellectual content: Tseng, Orloff.
Statistical analysis: Tseng.
Administrative, technical, or material support: Orloff.
Study supervision: Orloff.
Conflict of Interest Disclosures: None reported.
Previous Presentation: This paper was presented at the 85th Annual Meeting of the Pacific Coast Surgical Association; February 15, 2014; Dana Point, California.