From the Turku PET Centre (T.K., S.T., J.O.R., L.L.E.), University of Turku and Turku University Hospital, Finland; Kuopio City Home Care (S.T.), Rehabilitation and Medical Services for Elderly, Kuopio, Finland; City of Turku (M.H.V.), Welfare Division, Department of Geriatrics, Turku City Hospital and University of Turku, Finland; Division of Clinical Geriatrics (M.H.V.), NVS, Karolinska Institutet, Stockholm, Sweden; and National Institute for Health and Welfare (A.M.J.), Turku, Finland.