1. Faculty of Medicine, University of Turku, Turku, Finland
2. Department of Orthopedics and Traumatology, Helsinki University Central Hospital, Helsinki, Finland
3. Department of Surgery, Kanta-Häme Central Hospital, Hämeenlinna, Finland
4. Medical Department, FC Barcelona, Barcelona, Spain
5. FinnOrthopaedics/Hospital Mehiläinen NEO, Turku, Finland