1. Faculty of Medicine, Medical University of Innsbruck, 6020 Innsbruck, Austria
2. Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
3. HC TIWAG Innsbruck, 6020 Innsbruck, Austria
4. Department of Sports Orthopaedics, Technical University of Munich, 81675 Munich, Germany