1. Stem Cell Transplantation Division, National Cancer Center Hospital, Tokyo, Japan;
2. Clinical Data Management Division, University of Tokyo, Tokyo, Japan;
3. Metropolitan Ohtsuka Hospital, Tokyo, Japan;
4. Toranomon Hospital, Tokyo, Japan;
5. Kanagawa Cancer Center, Kanagawa, Japan;
6. NTT Kanto Medical Center, Tokyo, Japan;
7. Metropolitan Komagome Hospital, Tokyo, Japan;
8. Yamada Hospital, Gifu, Japan;
9. Kurume University, Fukuoka, Japan;
10. Jikei University, Tokyo, Japan;
11. Ehime Prefectural Central Hospital, Ehime, Japan;
12. Nagasaki University, Nagasaki, Japan;
13. Nihon University, Tokyo, Japan;
14. Metropolitan Bokutoh Hospital, Tokyo, Japan;
15. Dokkyo Medical University, Tochigi, Japan;
16. St Marianna University School of Medicine Hospital, Kanagawa, Japan; and
17. Saitama Medical Center, Jichi Medical University, Saitama, Japan