1. From the Department of Neurology (A.K., K.G.) and the Department of Neurodegeneration and Restorative Research, Centers of Neurological Medicine and Molecular Physiology of the Brain (CMPB) (J.S.), University of Göttingen, Göttingen, Germany; and the Department of General Neurology (A.K., K.G., F.S., J.S.), Center of Neurology and Hertie, Institute for Clinical Brain Research and the Department of Neuroradiology (T.N., E.V., U.E.), University of Tübingen, Tübingen, Germany.