1. Department of Hematology, Nippon Medical School, Tokyo, Japan;
2. Division of Hematology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan;
3. Department of Hematology, NTT Medical Center Tokyo, Tokyo, Japan;
4. Department of Hematology, Nagano Red Cross Hospital, Nagano, Japan;
5. Division of Hematology, Department of Medicine, Jichi Medical University, Tochigi, Japan;
6. Hemato-Oncology Department, St Luke’s International Hospital, Tokyo, Japan;
7. Department of Hematology, Japanese Red Cross Kyoto Daini Hospital, Kyoto, Japan;
8. Division of Hematology, Jichi Medical University Saitama Medical Center, Saitama, Japan;
9. Department of Hematology, Yokohama Minami Kyousai Hospital, Kanagawa, Japan;
10. Department of Hematology, Chiba Aoba Municipal Hospital, Chiba, Japan;
11. Department of Hematology, Chiba University Hospital, Chiba, Japan;
12. Department of Hematology, Eiju General Hopital, Tokyo, Japan;
13. Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan;
14. Department of Hematology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan;
15. Division of Hematology and Oncology, Kyoto Prefectural University of Medicine, Kyoto, Japan;
16. Department of Hematology, Federation of National Public Service Personnel Mutual Aid Associations, Toranomon Hospital, Tokyo, Japan;
17. Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan; and
18. Department of Hematopoietic Stem Cell Transplantation, National Cancer Center Hospital, Tokyo, Japan