University of Tokyo - Department of Hematology/Oncology, Kyoto University - Graduate School of Medicine, National Cancer Center Hospital - Division of Hematopoietic Stem Cell Transplantation, University Paris Diderot, Sorbonne Paris Cité, National Defense Medical College, Toranomon Hospital - Federation of National Public Service Personnel Mutual Aid Associations, Department of Hematology, Kitakyushu Municipal Medical Center, Kanagawa Cancer Center - Department of Hematology, Nagano Red Cross Hospital, Tokyo Metropolitan Tama Medical Center, University of Tokyo - Institute of Medical Science, Hamanomachi Hospital, Komagome Hospital - Tokyo Metropolitan Cancer and Infectious Diseases Center, Kawasaki Medical School, National Cancer Center Hospital - Division of Hematopoietic Stem Cell Transplantation, Japanese Red Cross Society, Jichi Medical University Saitama Medical Center - Division of Hematology, Japanese Data Center for Hematopoietic Cell Transplantation and National Defense Medical College