1. Institute of Sports Medicine, Department of Orthopaedic Surgery M, Bispebjerg Hospital, Center for Healthy Aging, Faculty of Health and Medical Sciences, University of Copenhagen, 2400 Copenhagen NV, Denmark.
2. Department of Biomedical Sciences, Center for Healthy Aging, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
3. AMS 14C Dating Centre, Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark.
4. Section for Sports Traumatology M51, Department of Orthopaedic Surgery M, Bispebjerg-Frederiksberg Hospital, 2400 Copenhagen NV, Denmark.
5. Musculoskeletal Tumor Section, Department of Orthopaedic Surgery, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen O, Denmark.