1. Department of Clinical Oncology; Leiden University Medical Center; Leiden the Netherlands
2. Department of Chemotherapy; Rizzoli Orthopedic Institute; Bologna Italy
3. Department of Orthopedics; Leiden University Medical Center; Leiden the Netherlands
4. Department of Surgical Pathology; Rizzoli Orthopedic Institute; Bologna Italy
5. Department of Orthopedic Surgery; Rizzoli Orthopedic Institute; Bologna Italy
6. Experimental Oncology Laboratory; Rizzoli Orthopedic Institute; Bologna Italy
7. Department of Pathology; Leiden University Medical Center; Leiden the Netherlands