1. Department of Orthopedics, University Medical Center, Rostock, Germany
2. Department of Orthopedics, University Medical Center, Erlangen, Germany
3. Department of Trauma Surgery, Friedrich Alexander University Erlangen-Nuremberg, Germany
4. Department of Sports Orthopedics, Sports Medicine, Sports Traumatology, Klinikum Bamberg, Germany
5. Section of Wilderness Medicine, Department of Emergency Medicine, University of Colorado School of Medicine, Denver, USA
6. School of Clinical and Applied Sciences, Leeds Becket University, Leeds, UK