1. Women's Health Unit, Section of General Internal Medicine, Evans Department of Medicine, Boston Medical Center and Boston University Chobanian & Avedisian School of Medicine
2. Boston University School of Public Health
3. Boston University Chobanian & Avedisian School of Medicine
4. Section of Hematology and Oncology, Evans Department of Medicine, Boston Medical Center and Boston University Chobanian & Avedisian School of Medicine, Boston, Massachusetts
5. Department of Medicine, Division of Cardiology, University of California, San Francisco, San Francisco, California, USA