1. Department of Orthopaedics and Traumatology, University Hospital “Agostino Gemelli”, Catholic University of the Sacred Heart School of Medicine, Rome - Italy
2. Division of Orthopaedics and Traumatology, Aurelia Hospital, Rome - Italy
3. Department of Orthopaedics, Interbalkan Medical Center, Thessaloniki - Greece
4. Department of Radiology, Hospital “A. Perrino”, Brindisi - Italy