1. From the Department of Clinical Medicine (A.M.V.-L., S.H.J., M.C., E.B.M.), and Department of Community Medicine (T.W.), UiT The Arctic University of Norway, Tromsø, Norway; Department of Neurology, Innlandet Hospital Trust, Norway (A.M.V.-L.); Department of Neurology and Clinical Neurophysiology, University Hospital of North Norway, Norway (S.H.J., E.B.M.); and Department of Neurology, Nordland Hospital Trust, Bodø, Norway (M.C.).