1 Department of Clinical Sciences, Division of Neurology, Lund University, Lund, Sweden; Department of Neurology and Rehabilitation Medicine, Skåne University Hospital, Lund, Sweden. Electronic address: Tobias.Cronberg@skane.se.
2 Department of Clinical Sciences, Division of Neurology, Lund University, Lund, Sweden; Department of Neurology and Rehabilitation Medicine, Skåne University Hospital, Lund, Sweden.