1. From the Framingham Heart Study, MA (T.J.N., R.S.V.)
2. Department of Medicine, Turku University Hospital and University of Turku, Finland (T.J.N.)
3. Department of Public Health Solutions, National Institute for Health and Welfare, Turku, Finland (T.J.N.)
4. Center for Clinical Translational Epidemiology and Comparative Effectiveness Research (B.K., R.S.V.), Boston University School of Medicine, MA
5. Section of Preventive Medicine, Department of Medicine (B.K., R.S.V.), Boston University School of Medicine, MA
6. Cardiovascular Engineering, Inc, Norwood, MA (G.F.M.)
7. Evans Department of Medicine and Whitaker Cardiovascular Institute (R.S.V.), Boston University School of Medicine, MA
8. Section of Cardiology, Department of Medicine (R.S.V.), Boston University School of Medicine, MA