Author Contributions: Dr Stolzenberg-Solomon had full access to all of 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: Stolzenberg-Solomon, Albanes.
Acquisition of data: Stolzenberg-Solomon, Limburg, Taylor, Virtamo, Albanes.
Analysis and interpretation of data: Stolzenberg-Solomon, Graubard, Chari, Limburg.
Drafting of the manuscript: Stolzenberg-Solomon.
Critical revision of the manuscript for important intellectual content: Stolzenberg-Solomon, Graubard, Chari, Limburg, Taylor, Virtamo, Albanes.
Statistical analysis: Stolzenberg-Solomon, Graubard.
Obtained funding: Stolzenberg-Solomon, Limburg, Taylor, Virtamo, Albanes.
Administrative, technical, or material support: Limburg, Taylor, Virtamo, Albanes.
Study supervision: Taylor, Albanes.
Financial Disclosures: None reported.
Funding/Support: This study was supported by the Intramural Research Program of the National Institutes of Public Health, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Department of Health and Human Services with Public Health Service contracts N01-CN-45165, N01-RC-45035, and N01-RC-37004.
Role of the Sponsor: The National Cancer Institute is responsible for the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, and approval of the manuscript.