1. Department of Hematology/Oncology, The Institute of Medical Science The University of Tokyo Tokyo Japan
2. Department of Hematology Nagasaki University Hospital Nagasaki Japan
3. Department of Hematology Kanazawa University Kanazawa Japan
4. Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital Tokyo Japan
5. Department of Hematology Toranomon Hospital Tokyo Japan
6. Department of Hematology Japanese Red Cross Nagoya First Hospital Nagoya Japan
7. Department of Hematology Hiroshima Red Cross Hospital & Atomic‐Bomb Survivors Hospital Hiroshima Japan
8. Division of Hematology, Department of Medicine Keio University School of Medicine Tokyo Japan
9. Department of Hematology/Oncology and Transfusion and Hemapheresis Center Kurashiki Central Hospital Kurashiki Japan
10. Department of Hematology and Oncology Okayama University Hospital Okayama Japan
11. Department of Hematology National Hospital Organisation Kumamoto Medical Center Kumamoto Japan
12. Department of Hematology Hamanomachi Hospital Fukuoka Japan
13. Department of Hematology Hokkaido University Hospital Sapporo Japan
14. Department of Hematology and Oncology, Graduate School of Medicine Kyoto University Kyoto Japan
15. Department of Hematology and Oncology Tokai University School of Medicine Isehara Japan
16. Hematopoietic Stem Cell Transplantation Division National Cancer Hospital Tokyo Japan
17. Japanese Data Center for Hematopoietic Cell Transplantation Nagoya Japan
18. Department of Registry Science for Transplant and Cellular Therapy Aichi Medical University School of Medicine Nagakute Japan