1. From Department of Epidemiology (D.Q.R.), University of Medicine and Dentistry of New Jersey–School of Public Health, Piscataway, NJ; Division of Aging (D.Q.R., J.M.G., T.K.) and Division of Preventive Medicine (J.M.G., T.K.), Brigham & Women’s Hospital, Boston, Mass; Massachusetts Veterans Epidemiology Research and Information Center (J.M.G.), Boston VA Healthcare System, Boston, Mass; Department of Epidemiology (T.K.), Harvard School of Public Health, Boston, Mass.