1. Department of Orthopedic Sports Medicine, Technical University of Munich, Klinikum rechts der Isar, Ismaninger Str. 22, 81675 Munich, Germany
2. Private Practice OC Erlangen-Ebermannstadt, Nägelsbach Str. 25b, 91052 Erlangen, Germany
3. Herz Jesu Hospital Münster-Hiltrup, Westfalen Str. 109, 48165 Münster, Germany
4. Private Practice Dr. Schanda, Rochusgasse 17/13, 1030 Vienna, Austria
5. Private Practice OrthoCare, Kurbad Str. 14, 1100 Vienna, Austria
6. University of Witten/Herdecke, Alfred-Herrhausen-Straße 45, 58455 Witten, Germany
7. Department of Trauma-, Hand- and Elbow Surgery, University Hospital of Cologne, Kerpener Str. 62, 50937 Cologne, Germany
8. Schoen-Clinic Lorsch, Department of Shoulder Surgery and Sports Traumatology, Wilhelm-Leuschner-Straße 10, 64653 Lorsch, Germany