1. Department of Clinical Sciences, Lund University, Lund, Sweden
2. Department of Orthopedics, Halland Hospital, Halmstad, Sweden
3. Department of Emergency Medicine, Central Hospital, Kristianstad, Sweden
4. Department of Orthopedics, Skåne University Hospital, Lund and Malmö, Sweden
5. Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
6. Department of Orthopaedic Surgery and Traumatology, Copenhagen University Hospital, Bispebjerg, Denmark