1. From Kysthospitalet in Hagevik, Orthopedic Department, Haukeland University Hospital (I.M.A., E.H., F.R., K.I.), and the Department of Clinical Medicine, University of Bergen (E.H., F.R., K.I.), Bergen, Møre and Romsdal Hospital Trust, Ålesund Hospital, Orthopedic Department, Ålesund (E.H.), the Oslo Center for Biostatistics and Epidemiology, Research Support Services (M.W.F.), the Research and Communication Unit for Musculoskeletal Health, Division of Clinical Neuroscience (K.S.), and the Department of...