1. From the Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands (S.M.Z., G.M.P., S.M.S, J.M.C.); Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands (N.D.K.); Department of Neurology, Helsinki University Central Hospital, Helsinki, Finland (S.H., T.T., E.H., J.P.); Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (T.T.); and Department of Neurology, Sahlgrenska University Hospital,...