1. Department of Chemotherapy, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy;
2. Department of Radiology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy;
3. Orthopedic Surgery, Orthopedic Oncologic Surgery, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy;
4. Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway