1. Valdoltra Orthopaedic Hospital, Ankaran, Slovenia
2. Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
3. Oregon Shoulder Institute, Medford, OR
4. Centre Hospitalier Privé Saint-Grégoire (Vivalto Santé), Saint- Grégoire, France
5. Division of Orthopaedics and Trauma Surgery, La Tour Hospital
6. Division of Orthopaedics and Trauma Surgery, Department of Surgery, Geneva University Hospitals, Geneva, Switzerland