1. Affiliations of authors: Infections and Immunoepidemiology Branch, Division of Cancer Epidemiology and Genetics (ARK, AH), Hormonal and Reproductive Epidemiology Branch, Division of Cancer Epidemiology and Genetics (MES), Biostatistics Branch, Division of Cancer Epidemiology and Genetics (SW), Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics (MS), Breast and Gynecologic Cancer Research Group, Divis