1. Department of Hematology Oita University Hospital Oita Japan
2. Department of Hematology Kouseiren Tsurumi Hospital Oita Japan
3. Department of Hematology Nagano Red Cross Hospital Nagano Japan
4. Department of Internal Medicine Niigata Cancer Center Hospital Niigata Japan
5. Department of Hematopoietic Stem Cell Transplantation National Cancer Center Hospital Tokyo Japan