Authors
Bård Bogen
Haraldsplass Deaconess Hospital, Bergen, Norway
Bergen University College, Bergen, Norway
Målfrid Holen Kristoffersen
Department of Orthopedics, Haukeland University Hospital, Bergen, Norway
Anette Hylen Ranhoff
Haraldsplass Deaconess Hospital, Bergen, Norway
Institute of Clinical Science, University of Bergen, Bergen, Norway