1. Department of EpidemiologyMailman School of Public Health, Columbia UniversityNew York NY
2. Institute of Medical Informatics, Biometry and Epidemiology, Ludwigs‐Maximilians‐University81377Munich Germany
3. Institute of Genetic Epidemiology, Helmholtz Zentrum München85764Munich Germany
4. Department of MedicineCollege of Physicians and Surgeons, Columbia UniversityNew York NY
5. Women at Risk, New York‐Presbyterian HospitalNew York NY
6. Herbert Irving Comprehensive Cancer CenterColumbia UniversityNew York NY