Accepted for Publication: February 1, 2013.
Published Online: June 26, 2013. doi:10.1001/jamasurg.2013.2136.
Analysis and interpretation of data: Russell, You, Hu, Cormier, Feig, Rodriguez-Bigas, Chang.
Drafting of the manuscript: Russell, Hu, Cormier, Chang.
Critical revision of the manuscript for important intellectual content: You, Cormier, Feig, Skibber, Rodriguez-Bigas, Nelson, Chang.
Statistical analysis: Russell, Hu, Cormier, Chang.
Obtained funding: Chang.
Administrative, technical, and material support: Russell, Feig, Skibber.
Study supervision: You, Skibber, Nelson, Chang.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by the National Institutes of Health/National Cancer Institute grants K07-CA133187 (to Dr Chang) and CA016672 (MD Anderson Cancer Center support grant).
Additional Contributions: We thank Kathryn Hale for her assistance with the manuscript editing and Christina Caraway for her technical assistance with manuscript preparation.