1. Department of Orthopedics and Traumatology, University Hospital “Agostino Gemelli”, School of Medicine, Catholic University of the Sacred Heart, Largo A. Gemelli 1, 00168 Rome, Italy
2. Department of Musculoskeletal Oncology, The Royal Orthopaedic Hospital, Birmingham B31 2AP, UK
3. Department of Orthopaedics and Traumatology, ISMU Göztepe Education and Research Hospital, Faculty of Medicine, Istanbul Medeniyet University, 34732 Istanbul, Turkey