1. From the Department of Neurology (V.P., Z.I.), Odense University Hospital, University of Southern Denmark; Danish Multiple Sclerosis Center and Danish Multiple Sclerosis Registry (M.M., F.S., J.L.B.), Copenhagen University Hospital-Rigshospitalet, Glostrup; Department of Clinical Medicine (M.M., F.S., J.L.B.), Faculty of Health and Medical Sciences, University of Copenhagen; Open Patient Data Explorative Network (S.M.), Odense University Hospital and Research Unit OPEN, Department of Clinical...