1. Department of Musculoskeletal Oncology, Takai Hospital, Tenri Nara, Japan;
2. Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan;
3. Department of Orthopaedic Surgery, Matsushita Memorial Hospital, Osaka, Japan;
4. Department of Oncology and Molecular Medicine, National Institute of Health, Rome, Italy;
5. Dipartimento Neurofarba, Sezione di ScienzeFarmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Sesto Fiorentino, Florence, Italy