1. Clinical Department of Orthopaedics, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck Austria
2. Clinical Department of Orthopaedics, AKH Linz, Krankenhausstraße 9, 4021, Linz Austria
3. Clinical Department of Orthopaedics, Royal Children’s Hospital, Flemington Road, 3052, Parkville, VIC Australia