1. Sports Trauma Research Unit, Hospital Mehiläinen NEO, Joukahaisenkatu 6, Turku, FI 20520, Finland
2. Department of Physical Activity and Health, Paavo Nurmi Centre, University of Turku, Turku, Finland
3. Department of Surgery, Kanta-Häme Central Hospital, Hämeenlinna, Finland
4. FC Barcelona, Medical Services, FIFA Center of Excellence, Barcelona, Spain
5. Department of Children and Adolescents, PEDEGO unit and MRC Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
6. Sports Trauma Research Unit, Hospital Mehiläinen NEO, Turku, Finland
7. Department of Musculoskeletal Disorders, University of Salerno School of Medicine, Surgery and Dentistry, Salerno, Italy Centre for Sports and Exercise Medicine, Queen Mary University of London, London, UK
8. Institute of Science and Technology in Medicine, Keele University School of Medicine, Stoke on Trent, UK