1. Department of Orthopaedics, Rehabilitationskrankenhaus, Ulm University, Oberer Eselsberg 45, 89081 Ulm, Germany.
2. Service de Chirurgie Orthopedique et Traumatologique, Hopital Tenon, 4 rue de la Chine, 75970 Paris, France.
3. Chief, Service of Orthopaedic Surgery and Trauma, University Hospital “Miguel Servet”, P° Isabel la Catòlica 1-3, 5009 Zaragoza, Spain.
4. Department of Orthopaedic Surgery, Martin-Luther-University, Magdeberge Strasse 22, 06122 Halle, Germany.
5. Department of Orthopaedics, Malmö General Hospital, 20520 Malmö, Sweden.
6. Head of the Department Department of Orthopaedics, Lund University, 22185 Lund, Sweden.
7. New Zealand Orthopaedic Association, 43 Kent Terrace, Wellington, New Zealand.
8. Department of Orthopaedic Surgery, University of Rome, “Tor Vergata”, 130, Via Chiala, 00139 Rome, Italy.
9. University of Edinburgh, The Royal Infirmary of Edinburgh at Little France, Old Dalkeith Road, Edinburgh EH16 4SU, UK.
10. University Hospital, Queen’s Medical Centre, Nottingham NG7 2UH, UK.