| Authors: |
Simonsen CS; Department of Neurology, Vestre Viken Hospital Trust, Drammen, Norway; Department of Neurology, Oslo University Hospital, Norway; Institute of Clinical Medicine, University of Oslo, Norway. Electronic address: cecsim@vestreviken.no., Flemmen HØ; Department of Neurology, Hospital Telemark HF, Skien, Norway; Institute of Health and Society, University of Oslo, Norway., Broch L; Department of Neurology, Vestre Viken Hospital Trust, Drammen, Norway; Department of Neurology, Oslo University Hospital, Norway; Institute of Clinical Medicine, University of Oslo, Norway., Brunborg C; Oslo Centre for Biostatistics and Epidemiology, Research Support Services, Oslo University Hospital, Norway., Berg-Hansen P; Department of Neurology, Oslo University Hospital, Norway., Moen SM; MS-Centre Hakadal, Norway., Celius EG; Department of Neurology, Oslo University Hospital, Norway; Institute of Clinical Medicine, University of Oslo, Norway. |