Accepted for Publication: July 9, 2013.
Published Online: September 18, 2013. doi:10.1001/jamasurg.2013.3776.
Acquisition of data: Cornwell, Pickrell, Nguyen, Casal.
Analysis and interpretation of data: Cornwell, Bakaeen, Lan, Omer, Pickrell, Nguyen, Casal.
Drafting of the manuscript: Cornwell, Pickrell, Nguyen, Casal.
Critical revision of the manuscript for important intellectual content: Cornwell, Bakaeen, Omer, Preventza, Pickrell, Nguyen, Casal.
Statistical analysis: Cornwell, Pickrell, Nguyen.
Administrative, technical, or material support: Cornwell, Lan, Omer.
Study supervision: Cornwell, Bakaeen, Preventza, Casal.
Conflict of Interest Disclosures: None reported.
Previous Presentation: Presented at the 37th Annual Surgical Symposium of the Association of VA Surgeons; April 22, 2013; Milwaukee, Wisconsin.
Additional Contributions: Katherine H. Simpson, MS, assisted with the statistical analysis.