Published Online: December 12, 2011. doi:10.1001/archinternmed.2011.602. This article was corrected for an error in the Figure key on December 13, 2011.
Author Contributions: Dr You had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of data analysis. Study concept and design: You, Xing, Chang, and Cormier. Acquisition of data: You, Xing, and Cormier. Analysis and interpretation of data: You, Xing, Feig, Chang, and Cormier. Drafting of the manuscript: You and Cormier. Critical revision of the manuscript for important intellectual content: You, Xing, Feig, Chang, and Cormier. Statistical analysis: You, Xing, and Cormier. Obtained funding: You and Cormier. Study supervision: Feig and Cormier.
Financial Disclosure: Dr Feig served on the speakers bureau for and received honorarium from Genomic Health.
Funding/Support: This study was supported by the University of Texas MD Anderson Cancer Center Institutional Research Grant (Dr You) and The University of Texas MD Anderson Cancer Center's Institute for Cancer Care Excellence.
Previous Presentation: This study was presented in part at the Sixth Annual Academic Surgical Congress, Association for Academic Surgery; February 4, 2011; Orange County, California.
Additional Contributions: Miguel A. Rodriguez-Bigas, MD, and John M. Skibber, MD, assisted with critical revision of the manuscript, and Yan K. Ling, MPH, assisted with data analysis.