Accepted for Publication: May 13, 2013.
Published Online: September 25, 2013. doi:10.1001/jamasurg.2013.3731.
Study concept and design: Basson.
Acquisition of data: All authors.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Chaturvedi.
Administrative, technical, and material support: Chaturvedi.
Study supervision: All authors.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported in part by grant 1 R56 DK096137-01 from the National Institutes of Health (Dr Basson).
Role of the Sponsor: The National Institutes of Health had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: Presented at the 37th Annual Surgical Symposium of the Association of VA Surgeons; April 23, 2013; Milwaukee, Wisconsin.