1. From the Department of Neurology (J.M., M.A.R., A.O., A.S., M.S., E.B.R., P.Y., R.D.), the Institute of Epidemiology and Social Medicine (H.W.), and the Institute for Clinical Radiology (A.K.), University of Münster, Münster, Germany; and EVK Bielefeld (W.R.S.), Neurologie Bethel, Bielefeld, Germany.