1. Musculoskeletal Rehabilitation Research Unit, Department of Physical & Occupational Therapy, Bispebjerg and Frederiksberg Hospitals, University of Copenhagen, Copenhagen, Denmark;
2. Institute of Sports Medicine Copenhagen, Bispebjerg and Frederiksberg Hospitals, University of Copenhagen, Copenhagen, Denmark;
3. Center for Healthy Aging, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark;
4. Department of Radiology Bispebjerg and Frederiksberg Hospitals, University of Copenhagen, Copenhagen, Denmark