Accepted for Publication: July 23, 2013.
Published Online: January 29, 2014. doi:10.1001/jamasurg.2013.4059.
Study concept and design: Paul Olson, Brasel, Schwarze.
Acquisition of data: Paul Olson, Pinkerton.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Paul Olson, Schwarze.
Critical revision of the manuscript for important intellectual content: Pinkerton, Brasel, Schwarze.
Statistical analysis: Paul Olson.
Study supervision: Brasel, Schwarze.
Conflict of Interest Disclosures: None reported.
Funding/Support: Dr Paul Olson is supported by the National Institutes of Health training grant T32 CA090217. Dr Schwarze is supported by the Clinical and Translational Science Award program, previously through National Center for Research Resources grant 1UL1RR025011, and now by National Center for Advancing Translational Sciences grant 9U54TR000021.
Role of the Sponsor: The sponsors had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: Portions of this project were presented as a poster at Digestive Diseases Week; May 20, 2013; Orlando, Florida.