1. Department of Pediatrics; Graduate School of Medicine; Kyoto University; Kyoto Japan
2. Human Health Sciences; Graduate School of Medicine; Kyoto University; Kyoto Japan
3. Department of Pharmacoepidemiology; Graduate School of Medicine and Public Health; Kyoto University; Kyoto Japan
4. Department of Pediatrics; Niigata Cancer Center Hospital; Niigata Japan
5. Department of Pediatrics; Sapporo Medical University Hospital; Sapporo Japan
6. Division of Hematology and Oncology; Shizuoka Children's Hospital; Shizuoka Japan
7. Department of Pediatrics; Kinki University; Faculty of Medicine; Osaka Japan
8. Division of Pediatrics; Japanese Red Cross Narita Hospital; Narita Japan
9. Division of Hematology; Saitama Medical Center; Jichi Medical University; Saitama Japan
10. Center of Bone Marrow Transplantation; Ryukyu University Hospital; Okinawa Japan
11. Department of Pediatrics and Child Health; Nihon University Itabashi Hospital; Tokyo Japan
12. Division of Hemato-oncology/Regeneration Medicine; Kanagawa Children's Medical Center; Kanagawa Japan
13. Department of Pediatrics; Nagoya University Graduate School of Medicine; Nagoya Japan
14. Department of Pediatrics and Cell Transplantation; Mie University Graduate School of Medicine; Mie Japan
15. Department of Hematology/Oncology; Saitama Children's Medical Center; Saitama Japan
16. Department of Hematology/Oncology; Osaka Medical Center and Research Institute for Maternal and Child Health; Osaka Japan
17. Department of Hematology and Oncology; Children's Medical Center; Japanese Red Cross Nagoya First Hospital; Nagoya Japan
18. Japanese Data Center for Hematopoietic Cell Transplantation; Nagoya Japan
19. Nagoya University Graduate School of Medicine; Nagoya Japan
20. Department of Hematology and Oncology; Kanazawa University Hospital; Kanazawa Japan
21. Department of Hematology and Oncology; Nagoya University Graduate School of Medicine; Nagoya Japan