Published Online: June 22, 2015. doi:10.1001/jamainternmed.2015.2405.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: Colditz.
Statistical analysis: All authors.
Study supervision: Colditz.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grant U54 CA155496 from the Washington University School of Medicine Transdisciplinary Research on Energetics and Cancer Center (Drs Colditz and Yang), which is funded by the National Cancer Institute, National Institutes of Health, and the Siteman Cancer Center; the Foundation for Barnes-Jewish Hospital (Drs Colditz and Yang); and the Breast Cancer Research Foundation (Dr Colditz).
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.