Accepted for Publication: June 11, 2104.
Published Online: January 14, 2015. doi:10.1001/jamasurg.2014.2253.
Study concept and design: Hu, You, Chang.
Acquisition, analysis, or interpretation of data: Hu, Bailey, Skibber, Rodriguez-Bigas, Feig, Chang.
Drafting of the manuscript: Hu, Bailey, Chang.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Hu, Bailey, Chang.
Obtained funding: Chang.
Administrative, technical, or material support: You, Chang.
Study supervision: Chang.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported in part by grants T32CA009599 (Dr Bailey) and K07-CA133187 (Dr Chang) from the National Institutes of Health/National Cancer Institute and an American Society of Clinical Oncology Foundation Career Development Award (Dr Chang).
Role of the Funder/Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.