1. Department of Pathology IRCCS Istituto Ortopedico Rizzoli Bologna Italy
2. Department of Pathology Complejo Hospitalario Metropolitano CSS Panama Panama
3. Department of Oncological and Degenerative Spine Surgery IRCCS Istituto Ortopedico Rizzoli BolognaItaly
4. Department of Pathology Azienda Ospedale‐Università Padova PaduaItaly
5. Department of Orthopaedic Oncology IRCCS Istituto Ortopedico Rizzoli BolognaItaly
6. IRCCS Istituto Ortopedico Galeazzi MilanoItaly
7. Department of Medicine University of Padua School of Medicine Padua Italy