1. From the Department of Neurology (M.L., G.F.H.), Klinikum Grosshadern, Ludwig-Maximilians-University, Munich, Germany; the Department of Geriatric Medicine (B.S.) and the Institute of Clinical Neuroscience (M.L., I.S.), Neuroepidemiology Unit, Sahlgrenska Academy, Göteborg University, Göteborg, Sweden.