1. Valdoltra Orthopaedic Hospital, Ankaran, Slovenia
2. Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
3. Department of Orthopaedic & Rehabilitation, Oregon Health & Science University, Portland, Oregon, USA
4. Centre Hospitalier Privé Saint-Grégoire (Vivalto Santé), Saint-Grégoire, France
5. Division of Orthopaedics and Trauma Surgery, La Tour Hospital, Meyrin, Switzerland
6. Division of Orthopaedics and Trauma Surgery, Department of Surgery, Geneva University Hospitals, Geneva, Switzerland