1. First Orthopaedic Department of Aristotle University of Thessaloniki, “Georgios Papanikolaou” Hospital, Thessaloniki, Greece
2. IASO Hospital, Athens, Greece
3. School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, Greece
4. Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany
5. Department of Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany
6. Shoulder Institute, ATOS Orthoparc Klinik, Cologne, Germany