1. Department of Hematology, Graduate School of Medicine Osaka City University Osaka Japan
2. Department of Internal Medicine Kyushu University Beppu Hospital Beppu Japan
3. Division of Blood Transfusion Okayama University Hospital Okayama Japan
4. Pediatric Medical Center Ehime Prefectural Central Hospital Ehime Japan
5. Department of Hematopoietic Stem Cell Transplantation National Cancer Center Hospital Tokyo Japan
6. Division of Hematology, Department of Medicine Keio University School of Medicine Tokyo Japan
7. Division of Molecular Oncology National Cancer Center Research Institute Tokyo Japan
8. Department of Hematology Toranomon Hospital Tokyo Japan
9. Department of Hematology Hiroshima Red Cross Hospital & Atomic‐bomb Survivors Hospital Hiroshima Japan
10. Department of Hematology/Oncology Osaka Women's and Children's Hospital Osaka Japan
11. Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital Tokyo Japan
12. Department of Medicine and Biosystemic Science Kyushu University Graduate School of Medical Sciences Fukuoka Japan
13. Department of Hematology Sapporo Hokuyu Hospital Hokkaido Japan
14. Department of Hematology Kobe City Medical Center General Hospital Hyogo Japan
15. Department of Hematology Hokkaido University Hospital Hokkaido Japan
16. Department of Hematology National Center for Global Health and Medicine Tokyo Japan
17. Department of Pediatrics Osaka International Cancer Institute Osaka Japan
18. Department of Hematology and Oncology Tokai University School of Medicine Kanagawa Japan
19. Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine Hiroshima University Hiroshima Japan
20. Japanese Data Center for Hematopoietic Cell Transplantation Aichi Japan
21. Department of Registry Science for Transplant and Cellular Therapy Aichi Medical University School of Medicine Aichi Japan