Accepted for Publication: June 29, 2013.
Published Online: March 26, 2014. doi:10.1001/jamasurg.2013.4113.
Study concept and design: Batchu, Gruzdyn, Weaver, Gruber.
Acquisition of data: Batchu, Gruzdyn.
Analysis and interpretation of data: Batchu, Gruzdyn, Potti, Gruber.
Drafting of the manuscript: Batchu, Gruber.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Batchu, Gruzdyn.
Obtained funding: Batchu, Weaver.
Administrative, technical, and material support: Batchu, Gruzdyn, Potti, Gruber.
Study supervision: Batchu, Weaver, Gruber.
Conflict of Interest Disclosures: None reported.
Previous Presentation: This paper was presented at the 2013 Annual Meeting of the Association of VA Surgeons; April 23, 2013; Milwaukee, Wisconsin.