1 Department of Occupational and Physical Therapy, Physical Medicine and Rehabilitation Research - Copenhagen (PMR-C), Amager-Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark.
2 Department of Orthopedic Surgery, Amager-Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark.
3 Clinical Research Centre, Amager-Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark.
4 The Parker Institute, Copenhagen University Hospital Bispebjerg-Frederiksberg, Copenhagen, Denmark.
5 Department of Orthopedic Surgery, Sports Orthopedic Research Centre - Copenhagen (SORC-C), Amager-Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark.
6 Health Services Research Unit, University of Aberdeen, Aberdeen, UK.
7 Department of Physical and Occupational Therapy, Copenhagen University Hospital Bispebjerg-Frederiksberg, Copenhagen, Denmark.