Accepted for Publication: January 3, 2012.
Published Online: February 20, 2012. doi:10.1001/archsurg.2011.2220
Author Contributions: Dr Schold had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Schold, Buccini, Goldfarb, and Srinivas. Acquisition of data: Schold. Analysis and interpretation of data: Schold, Buccini, Kattan, Goldfarb, Flechner, Poggio, Fatica, Kayler, and Sehgal. Drafting of the manuscript: Schold, Buccini, and Srinivas. Critical revision of the manuscript for important intellectual content: Schold, Buccini, Kattan, Goldfarb, Flechner, Srinivas, Poggio, Fatica, Kayler, and Sehgal. Statistical analysis: Schold and Kattan. Administrative, technical, and material support: Buccini, Goldfarb, and Flechner. Study supervision: Srinivas.
Financial Disclosure: None reported.
Disclaimer: The data reported herein have been supplied by the Minneapolis Medical Research Foundation as the contractor for the SRTR. The interpretation and reporting of these data are the responsibility of the authors and in no way should be seen as an official policy of or interpretation by the SRTR or the US government.
Additional Contributions: Changhong Yu, MS, provided expert assistance in statistical programming and analysis.