Author Contributions: Dr Plevritis 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: Plevritis, Garber.
Acquisition of data: Plevritis, Kurian, Ikeda, Stockdale.
Analysis and interpretation of data: Plevritis, Kurian, Sigal, Daniel, Garber.
Drafting of the manuscript: Plevritis, Kurian.
Critical revision of the manuscript for important intellectual content: Plevritis, Kurian, Sigal, Daniel, Ikeda, Stockdale, Garber.
Statistical analysis: Plevritis, Sigal, Garber.
Obtained funding: Plevritis.
Administrative, technical, or material support: Plevritis.
Study supervision: Plevritis.
Financial Disclosures: None reported.
Funding/Support: This study was funded by National Institutes of Health grants R01 CA829040, U01 CA088248, R01 CA66785 and by the California Breast Cancer Research Program Fellowship Award No. 11FB-0051.
Role of the Sponsors: None of the funders had any role in the conduct of the study; collection, management, analysis, or interpretation of the data; or preparation, review, or approval of the manuscript.