1. Department of Hematology/Oncology The Institute of Medical Science The University of Tokyo Tokyo Japan
2. Transfusion and Cell Therapy Unit Nagasaki University Hospital Nagasaki Japan
3. Department of Hematology Kobe City Medical Center General Hospital Kobe Japan
4. Department of Environmental Medicine and Population Science Graduate School of Medicine Osaka University Suita Japan
5. Department of Hematology Sasebo City General Hospital Sasebo Japan
6. Stem Cell Genetics Institute for Life and Medical Sciences Kyoto University Kyoto Japan
7. Department of Hematology Toranomon Hospital Tokyo Japan
8. Department of Hematology and Oncology Tokai University School of Medicine Isehara Japan
9. Hematology Division Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital Tokyo Japan
10. Department of Hematology Kanagawa Cancer Center Yokohama Japan
11. Department of Hematology/Oncology and Transfusion and Hemapheresis Center Kurashiki Central Hospital Kurashiki Japan
12. Department of Hematology Hiroshima Red Cross Hospital & Atomic‐Bomb Survivors Hospital Hiroshima Japan
13. Department of Hematology and Oncology Anjo Kosei Hospital Anjo Japan
14. Department of Hematology Nara Medical University Hospital Nara Japan
15. Department of Hematology Osaka Metropolitan University Hospital Osaka Japan
16. Department of Hematology National Hospital Organisation Kumamoto Medical Center Kumamoto Japan
17. Department of Hematology University of Tsukuba Hospital Tsukuba Japan
18. Division of Clinical Precision Research Platform The Institute of Medical Science The University of Tokyo Tokyo Japan
19. Japanese Red Cross Kanto‐Koshinetsu Block Blood Center Tokyo Japan
20. Department of Hematology and Oncology Graduate School of Medicine Kyoto University Kyoto Japan
21. Department of Hematology and Oncology Research Institute for Radiation Biology and Medicine Hiroshima University Hiroshima Japan
22. Japanese Data Center for Hematopoietic Cell Transplantation Nagakute Japan
23. Department of Registry Science for Transplant and Cellular Therapy Aichi Medical University School of Medicine Nagakute Japan