1. Department of Pathology IRCCSIstituto Ortopedico Rizzoli Bologna Italy
2. Department of Orthopaedic Oncology IRCCSIstituto Ortopedico Rizzoli Bologna Italy
3. Department of Pathology Azienda Ospedale Università Padova Italy
4. Statistical Service IRCCSIstituto Ortopedico Rizzoli Bologna Italy
5. Department of Pathology Villa Erbosa Hospital Bologna Italy
6. Department of Translational Research University of Padua School of Medicine Pisa Italy
7. Department of Medicine School of Medicine University of Pisa Padua Italy