1. Section of Preventive Medicine and Epidemiology (R.S.V., V.X.), Boston University School of Medicine, Boston, MA.
2. Framingham Heart Study, MA (R.S.V., V.X., A.B., M.G.L., S.S.).
3. Department of Epidemiology (R.S.V.), Boston University School of Public Health, MA.
4. Department of Biostatistics (S.P., V.X., A.B., M.G.L.), Boston University School of Public Health, MA.
5. Department of Neurology (A.B., S.S.), Boston University School of Medicine, Boston, MA.
6. Biggs Institute for Alzheimer’s Disease, University of Texas Health Sciences Center at San Antonio (S.S.).
7. Cardiovascular Engineering, Inc, Norwood, MA (G.F.M.).