1. Division of Cardiology, Duke University Medical Center, Durham, NC
2. Data Coordinating Center, Boston University School of Public Health, Boston, MA
3. General Medicine Division, Massachusetts General Hospital, Boston, MA
4. Department of Radiology, Massachusetts General Hospital, Boston, MA
5. Department of Biostatistics, Boston University School of Public Health, Boston, MA
6. National Heart, Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA
7. Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
8. Section of Cardiovascular Medicine, Department of Medicine, Boston University School of Medicine, Boston, MA