Published Online: September 24, 2014. doi:10.1001/jamasurg.2014.1335.
Study concept and design: Tackett, Walke, Accordino, Melin, Rosenthal.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Tackett, Melin, Rosenthal.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Tackett, Accordino, Melin.
Obtained funding: Walke, Accordino, Rosenthal.
Administrative, technical, or material support: Accordino, Melin, Bishop, Rosenthal.
Study supervision: Accordino, Kumar, Rosenthal.
Conflict of Interest Disclosures: None reported.
Previous Presentation: This paper was presented at the 38th Annual Surgical Symposium of the Association of VA Surgeons; April 6, 2014; New Haven, Connecticut.