| Affiliation: | (1) Laboratory of Clinical Epidemiology, INRCA Geriatric Department, Viale Michelangiolo 41, 50127 Florence, Italy;(2) Department of Critical Care Medicine and Surgery, Section of Gerontology and Geriatric Medicine, University of Florence, Florence, Italy;(3) Department of Medicine and Aging, University of Chieti, Chieti, Italy;(4) Laboratory of Epidemiology, Demography and Biometry, NIA, Bethesda, Maryland, USA;(5) Clinical Research Branch, National Institute on Aging (NIH), Baltimore, Maryland, USA; |
