1. Division of Cardiovascular Medicine; Brigham and Women's Hospital; Boston MA USA
2. Harvard Medical School; Boston MA USA
3. National Heart; Lung and Blood Institute's and Boston University's Framingham Heart Study; Framingham MA USA
4. Division of Endocrinology, Metabolism and Hypertension; Brigham and Women's Hospital; Boston MA USA
5. Data Coordinating Center; Boston University School of Public Health; Boston MA USA
6. Department of Radiology; Massachusetts General Hospital; Harvard Medical School; Boston MA USA
7. Department of Mathematics and Statistics; Boston University; Boston MA USA
8. Evans Department of Medicine, Preventive Medicine Section; Boston University School of Medicine; Boston MA USA
9. Evans Department of Medicine; Whitaker Cardiovascular Institute and Cardiology Section; Boston University School of Medicine; Boston MA USA
10. Cardiovascular Engineering Inc.; Norwood MA USA
11. National Heart; Lung and Blood Institute and the Center for Population Studies; Framingham MA USA