1. Department of Hematology Kobe City Hospital Organization Kobe City Medical Center General Hospital Kobe Japan
2. Department of Environmental Medicine and Population Science, Graduate School of Medicine Osaka University Suita Japan
3. Department of Hematology/Oncology The Institute of Medical Science, The University of Tokyo Tokyo Japan
4. Department of Hematology Osaka Metropolitan University Graduate School of Medicine Osaka Japan
5. Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital Tokyo Japan
6. Department of Hematology and Oncology Anjo Kosei Hospital Anjo‐shi Japan
7. Department of Hematology Hamanomachi Hospital Fukuoka Japan
8. Department of Hematology Japanese Red Cross Aichi Medical Center Nagoya Daiichi Hospital Nagoya‐shi Japan
9. Department of Hematology Hokkaido University Hospital Sapporo Japan
10. Department of Hematology Sapporo Hokuyu Hospital Sapporo Japan
11. Department of Hematology/Oncology Tokai University School of Medicine Isehara Japan
12. Department of Hematology National Hospital Organization Kumamoto Medical Center Kumamoto Japan
13. Department of Hematology and Oncology, Graduate School of Medicine Kyoto University Kyoto Japan
14. Department of Hematology Research Institute for Radiation Biology and Medicine, Hiroshima University Hiroshima Japan
15. Japanese Data Center for Hematopoietic Cell Transplantation Nagakute Japan
16. Department of Registry Science for Transplant and Cellular Therapy Aichi Medical University School of Medicine Nagakute Japan
17. Transfusion and Cell Therapy Unit Nagasaki University Hospital Nagasaki Japan