1. Department of Radiology, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, 20520 Turku, Finland
2. Department of Pediatric Orthopedic Surgery, University of Turku and Turku University Hospital, 20520 Turku, Finland
3. Medical Imaging Center, Department of Radiology, Tampere University and Tampere University Hospital, 33100 Tampere, Finland