1. National Cancer Center Hospital, Tokyo, Japan;
2. Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan;
3. Saitama Medical Center, Jichi Medical University, Saitama, Japan;
4. Okayama University Hospital, Okayama, Japan;
5. National Hospital Organization Kyushu Medical Center, Fukuoka, Japan;
6. Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital, Hiroshima, Japan;
7. Keio University School of Medicine, Tokyo, Japan;
8. The Institute of Medical Science, The University of Tokyo, Tokyo, Japan;
9. Tokai University Hospital, Isehara, Japan;
10. JA Aichi Konan Kosei Hospital, Konan, Japan;
11. Osaka City University, Osaka, Japan;
12. Saiseikai Maebashi Hospital, Gunma, Japan;
13. Kobe City Medical Center General Hospital, Kobe, Japan;
14. Hokkaido University Hospital, Sapporo, Japan;
15. Shimane Prefectural Central Hospital, Izumo, Japan;
16. Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan;
17. Japanese Data Center for Hematopoietic Cell Transplantation, Nagoya, Japan; and
18. St. Luke’s International Hospital, Tokyo, Japan