1. Orthopaedic Surgery, Artroscopia G.C., Fundación García-Cugat, Hospital Quirón Barcelona, Spain
2. Universitat Internacional Catalunya, Barcelona, Spain
3. Orthopaedic Department, Hospital Vall d'Hebron, Barcelona, Spain
4. Orthopaedic Department, Hospital Clínic Barcelona, Spain
5. Hospital Quirón-Teknon, Barcelona, Spain