1. Department of PediatricsNihon University School of Medicine Tokyo Japan
2. Department of Orthopedic SurgeryNational Hospital Organization Kyushu Cancer Center Fukuoka Japan
3. Cancer Institute Hospital‐JFCR Tokyo Japan
4. Department of PathologyKeio University School of Medicine Tokyo Japan
5. Department of Musculoskeletal Oncology and Rehabilitation MedicineNational Cancer Center Hospital Tokyo Japan
6. Department of Pediatric OncologyNational Cancer Center Hospital East Kashiwa Japan
7. Department of Pediatric Medicine for Hospital Collaboration, Graduate School of Medical, SciencesKyushu University Fukuoka Japan
8. Department of Pediatric OncologyFukushima Medical University Hospital Fukushima Japan
9. Department of Pediatrics Graduate School of Medical SciencesTokushima University Tokushima Japan
10. Department of Orthopedic SurgeryOkayama University Hospital Okayama Japan
11. Kawagoe Preventive Medical Center Clinic Saitama Japan