1. From the Department of Clinical and Experimental Medicine (S.V., R.F.), University of Ferrara, Italy; Laboratory of Epidemiology (S.V., J.M.G., T.B.H.), Demography and Biometry, National Institute on Aging, Bethesda, Md; Sticht Center on Aging (M.P., S.B.K.), Department of Internal Medicine, Wake Forest University Health Sciences, Winston-Salem, NC; Geriatric Department (L.F.), I Fraticini, Italian National Institute for Research and Care on Aging (INRCA), Florence, Italy; and Intramural Research...