1. Section of Hematology/Oncology, Department of Medicine; Boston Medical Center/Boston University School of Medicine; Boston Massachusetts
2. Women's Health Unit, Section of General Internal Medicine, Department of Medicine; Boston Medical Center and Women's Health Interdisciplinary Research Center, Boston University School of Medicine; Boston Massachusetts
3. Data Coordinating Center; Boston University School of Public Health; Boston Massachusetts
4. Department of Biostatistics; Boston University School of Public Health; Boston Massachusetts
5. Massachusetts Institute of Technology; Cambridge Massachusetts
6. Division of Primary Care; Lahey Hospital and Medical Center; Burlington Massachusetts
7. Institute for Clinical Research and Health Policy Studies, Clinical and Translational Science Institute, Tufts Medical Center, Tufts University School of Medicine; Boston Massachusetts