1. Department of Orthopaedic Surgery, Julius Maximilians University of Wuerzburg, Wuerzburg, Germany
2. Department of Traumatology and Hand Surgery, St. Vincentius Clinic, Suedendstraße Karlsruhe, Germany
3. Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Hospital of Wuerzburg, Wuerzburg, Germany
4. Clinic for Shoulder Surgery, Rhoen Klinikum AG, Bad Neustadt/Saale, Germany
5. Department of Orthopaedic and Trauma Surgery, Norbert-Kerkel-Platz, Krankenhaus Agatharied GmbH, Hausham, Germany