1. University of Witten / Herdecke, Cologne
Merheim Medical Center, Cologne, Germany
2. University of Freiburg, Department of Sport and Sport Science,
Freiburg, Germany
3. Department of Trauma Surgery, Orthopaedics and Sports Traumatology, BG
Hospital Hamburg, Hamburg, Germany
4. Department of Sport Medicine Humboldt University and Charité
University School of Medicine, Berlin, Germany
5. University of Cologne, Vice-rectorate for Teaching and Social Science
Services Studies Central Evaluation of Studies and Teaching, Koln,
Germany
6. Sana Dreifaltigkeits-Krankenhaus Koln-Braunsfeld GmbH, Department of
Trauma Surgery and Sports Traumatology, Koln, Germany