1. Chemotherapy Unit, IRCCS, Istituto Ortopedico Rizzoli, Bologna, Italy
2. Department of Orthopedics and Orthopedic Oncology, University of Padova, Padova, Italy
3. IRCCS Galeazzi Orthopedic Institute, Milan, Italy
4. Department of Orthopedic Oncology, Florence University, Florence, Italy
5. Bambino Gesù Children’s Hospital, Rome, Italy
6. Department of Oncological Spine Surgery, Istituto Ortopedico Rizzoli, Bologna, Italy
7. Pisa University, Pisa, Italy