Accepted for Publication: February 14, 2013.
Published Online: September 18, 2013. doi:10.1001/jamasurg.2013.351.
Acquisition of data: Price, Choo, Abdullah.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Ortega Price, Choo, Abdullah.
Critical revision of the manuscript for important intellectual content: Ortega, Price, Goldstein, Stewart, Abdullah.
Statistical analysis: Ortega, Price, Choo, Abdullah.
Administrative, technical, or material support: Ortega, Price, Choo, Goldstein, Abdullah.
Study supervision: Price, Stewart, Abdullah.
Conflict of Interest Disclosures: None reported.