1 Clinical Department of Neurology (K.S., H.H., T.B., M.R.), Medical University of Innsbruck, Austria; Nuffield Department of Clinical Neurosciences (P.W., M.I.L.), University of Oxford, United Kingdom; Department of Neurology (F.A.-D.), Karl Landsteiner Institute for Neuroimmunological and Neurodegenerative Disorders, Sozialmedizinisches Zentrum Ost Donauspital, Vienna, Austria; Department of Neurology (J.P.), Oxford University Hospitals Trust, Oxford, United Kingdom; and Department of Neurology (S.V., R.M.), Lyon University Hospital and Lyon Neurosciences Research Centre, Lyon, France.