Author Contributions: Dr Rabkin 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: Anderson, Camargo, Rosenberg, Rabkin.
Acquisition of data: Anderson, Camargo, Rosenberg.
Analysis and interpretation of data: Anderson, Camargo, Fraumeni, Correa, Rosenberg, Rabkin.
Drafting of the manuscript: Anderson, Camargo, Fraumeni, Rosenberg, Rabkin.
Critical revision of the manuscript for important intellectual content: Anderson, Fraumeni, Correa, Rosenberg, Rabkin.
Statistical analysis: Anderson, Camargo, Rosenberg, Rabkin.
Obtained funding: Fraumeni.
Administrative, technical, or material support: Fraumeni.
Study supervision: Fraumeni.
Financial Disclosures: None reported.
Funding/Support: This study was funded by the Intramural Research Program of the National Cancer Institute, National Institutes of Health.
Role of the Sponsor: The sponsor reviewed and approved the final submission but did not have a role in design and conduct of the study; collection, management, analysis, and interpretation of the data; or preparation of the manuscript.