1. Department of Orthopedic Surgery M; Faculty of Health and Medical Sciences; Institute of Sports Medicine Copenhagen; Bispebjerg Hospital and Center for Healthy Aging; University of Copenhagen; Copenhagen Denmark
2. Research Unit for General Practice in Aalborg; Department of Clinical Medicine; Aalborg University; Aalborg Denmark
3. Department of Physical Therapy; Bispebjerg Hospital; Copenhagen Denmark
4. Radiology; Bispebjerg Frederiksberg Hospital; University of Copenhagen; Copenhagen Denmark