1. Section of Gastroenterology Boston Medical CenterBoston University School of Medicine Boston MA USA
2. Merck Research Labs Kenilworth NJ USA
3. National Heart, Lung, and Blood Institute’s and Boston University’s Framingham Heart Study Framingham MA USA
4. Department of Mathematics and Statistics Boston University Boston MA USA
5. Section of Cardiovascular Medicine Boston Medical CenterBoston University School of Medicine Boston MA USA
6. Department of Epidemiology Boston University School of Public Health Boston MA USA
7. Cardiovascular Engineering, Inc Norwood MA USA
8. Cardiology Division Department of Medicine and the Department of Quantitative Health Sciences University of Massachusetts Medical School Worchester MA USA
9. Cardiovascular Division VA Boston Healthcare System Boston MA USA
10. Division of Cardiovascular MedicineBrigham and Women's Hospital Boston MA USA
11. Harvard Medical School Boston MA USA
12. Section of Preventive Medicine and Epidemiology Department of Medicine Boston Medical Center Boston MA USA
13. Barbra Streisand Women's Heart CenterSmidt Heart InstituteCedars‐Sinai Medical Center Los Angeles CA USA