From the Departments of Gerontology and Geriatrics (S.R., S.M., B.S., A.J.M.d.C.), Radiology (S.R., B.S.), and Medical Statistics and Bioinformatics (T.S.), Leiden University Medical Centre, Leiden, the Netherlands; and Netherlands Consortium for Healthy Ageing, Leiden, the Netherlands (A.J.M.d.C.). (2014-05時点)