1. From the Division of Gerontology (D.H.K., I.H., L.A.L.), Beth Israel Deaconess Medical Center, Boston, MA; Institute for Aging Research (D.H.K., I.H., E.N., L.A.L.), Hebrew SeniorLife, Harvard Medical School, Boston, MA; Department of Epidemiology (D.H.K.), Harvard School of Public Health, Boston, MA; Department of Epidemiology (E.N., E.S.S.), University of Pittsburgh, Pittsburgh, PA; Department of Ophthalmology (R.K.), University of Wisconsin School of Medicine and Public Health, Madison, WI;...