1. From the Institute of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (H.B., A.A.); Department of Neurology, Klinikum Ludwigshafen, Ludwigshafen, Germany (F.P., C.U., F.B., A.J.G.); Institute of Public Health, University of Heidelberg, Heidelberg, Germany (H.B., A.S.); and Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany (C.G.-G.).