1. From the Department of Neurology (M.A., C.S., M.-G.B.), Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, Paris Diderot University, Paris, France; Department of Neurology (M.A., R.K., A.G., U.F., H.P.M.), Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Department of Neurology (H.S., D.G., R.W.B.), University Hospital Zurich, Zurich, Switzerland; and Institute of Diagnostic and Interventional Neuroradiology (J.G.), Inselspital, Bern University Hospital,...