1. Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Japan;
2. Japanese Red Cross Kanto-Koshinetsu Block Blood Center, Tokyo, Japan;
3. Department of Preventive Medicine, Kyushu University School of Medicine, Fukuoka, Japan;
4. Department of Hematology, Fujita Health University School of Medicine, Toyoake, Japan;
5. Department of Hematology and Oncology, Tokai University School of Medicine, Isehara, Japan;
6. Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan;
7. Hematology Division, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan;
8. Department of Hematology, Hamanomachi Hospital, Fukuoka, Japan;
9. Division of Hematology, Keio University School of Medicine, Tokyo, Japan;
10. Department of Hematology, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan;
11. Department of Hematology, Meitetsu Hospital, Nagoya, Japan;
12. Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan;
13. HLA Laboratory, Kyoto, Japan;
14. Department of Cell Transplantation, Tokai University School of Medicine, Isehara, Japan;
15. Japanese Data Center for Hematopoietic Cell Transplantation, Nagoya, Japan;
16. Department of Healthcare Administration, Nagoya University Graduate School of Medicine, Nagoya, Japan;
17. Japanese Red Cross Kinki Block Blood Center, Osaka, Japan;
18. Department of Promotion for Blood and Marrow Transplantation, Aichi Medical University, Aichi, Japan; and
19. Institute for Advanced Study, Kyushu University, Fukuoka, Japan