1. Klinikum Konstanz, Department of Orthopaedic and Trauma Surgery, Mainaustrasse 35, 78464 Konstanz, Germany
2. University Center of Orthopaedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus Dresden, TU Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
3. Waldkliniken Eisenberg GmbH, Klosterlausnitzer Strasse 81, 07607 Eisenberg, Germany
4. Department of Trauma and Orthopaedics, Nottingham University Hospitals NHS Trust, Nottingham NG7 2UH, UK
5. Aesculap AG Research and Development and Medical Scientific Affairs, Am Aesculap-Platz, 78532 Tuttlingen, Germany
6. Department of Orthopaedic and Trauma Surgery, Musculoskeletal University Center Munich (MUM), LMULudwigs Maximilian University, 81377 Munich, Germany