1. Division of Rare Cancer Research, National Cancer Center Research Institute, Tokyo, Japan
2. Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
3. Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Tokushima University, Tokushima, Japan
4. Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan
5. Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan