1. From the Department of Epidemiology (J.R.S.), Harvard School of Public Health, Boston, Mass; the Department of Medicine (T.K.), Brigham and Women’s Hospital, Harvard Medical School, Department of Epidemiology, Harvard School of Public Health, Boston, Mass, INSERM, Unit 708-Neuroepidemiolgy, Parism France, and the Faculty of Medicine, University Pierre et Marie Curie, Paris, France; the Division of Preventive Medicine & Division of Aging (J.E.B.), Brigham and Women’s Hospital and Harvard Medical...