1. Institute of Sports Medicine, Department of Orthopedic Surgery M, Bispebjerg Hospital, Copenhagen, Denmark
2. Center for General Practice at Aalborg University, Aalborg University, Aalborg, Denmark
3. Department of Occupational Therapy and Physiotherapy, Bispebjerg Hospital, Copenhagen, Denmark
4. Center for Rheumatology and Spine Diseases, Centre for Head and Orthopaedics, Rigshospitalet, Glostrup, Denmark
5. Department of Occupational Therapy and Physiotherapy, Department of Clinical Medicine, Aalborg University Hospital, Aalborg, Denmark
6. Department of Health Science and Technology, Aalborg University, Aalborg, Denmark