Accepted for Publication: June 7, 2013.
Published Online: September 4, 2013. doi:10.1001/jamasurg.2013.3728.
Acquisition of data: Keim, Wilson, Tsai, Dua, Khan.
Analysis and interpretation of data: Pilgrim, Keim, Turaga, Dua, Oh, Gamblin, Christians.
Drafting of the manuscript: Pappas, Pilgrim, Keim, Harris, Wilson, Dua, Gamblin, Christians.
Critical revision of the manuscript for important intellectual content: Pilgrim, Wilson, Turaga, Tsai, Dua, Khan, Oh, Gamblin, Christians.
Statistical analysis: Pilgrim, Dua.
Administrative, technical, or material support: Pilgrim, Wilson, Khan, Oh, Gamblin, Christians.
Study supervision: Pappas, Keim, Wilson, Dua, Gamblin.
Conflict of Interest Disclosures: None reported.
Previous Presentation: This work was presented at the Association of Veterans Affairs Surgeons Meeting; April 21, 2013; Milwaukee, Wisconsin.