Department of Hematology, Osaka International Cancer Institute, Osaka, Japan

Shigeo Fuji & Jun Ishikawa

Department of Hematology, Imamura General Hospital, Kagoshima, Japan

Masahito Tokunaga & Nobuaki Nakano

Hematology, Oncology & Cardiovascular medicine, Kyushu University Hospital, Fukuoka, Japan

Koji Kato & Yasuo Mori

Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan

Takero Shindo

Department of Hematology, Sasebo City General Hospital, Nagasaki, Japan

Junya Makiyama & Yukiyoshi Moriuchi

Transfusion and Cell Therapy Unit, Nagasaki University Hospital, Nagasaki, Japan

Hidehiro Itonaga

Department of Hematopoietic Stem Cell Transplantation, National Cancer Center Hospital, Tokyo, Japan

Ayumu Ito & Takahiro Fukuda

Department of Hematology, Hamanomachi Hospital, Fukuoka, Japan

Tetsuya Eto

Department of Hematology, Hokkaido University Hospital, Hokkaido, Japan

Yuta Hasegawa

Department of Hematology and Rheumatology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan

Kenji Ishitsuka & Makoto Yoshimitsu

Department of Hematology, Sapporo Hokuyu Hospital, Hokkaido, Japan

Shuichi Ota

Department of Hematology and Cell Therapy, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan

Youko Suehiro

Department of Hematology, National Hospital Organization Kyusyu Medical Center, Fukuoka, Japan

Ken Takase

Division of Hematology, Jichi Medical University, Tochigi, Japan

Yoshinobu Kanda

Department of Hematology/Oncology, Tokai University School of Medicine, Kanagawa, Japan

Makoto Onizuka

Japanese Data Center for Hematopoietic Cell Transplantation, Aichi, Japan

Yoshiko Atsuta

Department of Registry Science for Transplant and Cellular Therapy, Aichi Medical University School of Medicine, Aichi, Japan

Yoshiko Atsuta

S.F. and M.Y. designed the study. S.F., M.T., K.K., N.N., T.S., J.M., H.I., A.I., T.E., J.I., Y.H., K.I., Y.M., S.O., Y.M., S.Y., K.T., Y.K., M.O., T.F., Y.A., and M.Y. collected the data. S.F. performed the statistical analysis. S.F., M.T., K.K., N.N., and M.Y. wrote the manuscript. All authors agreed to submit the final version of the manuscript.