[1] Osaka Univ, Grad Sch Med, Dept Pediat, Osaka, Japan
[2] Osaka Int Canc Inst, Dept Pediat, Osaka, Japan
[3] Pediat AML Working Grp, Japanese Soc Transplantat & Cellular Therapy, Osaka, Japan
[4] Osaka Womens & Childrens Hosp, Dept Hematol Oncol, Osaka, Japan
[5] Japanese Red Cross Nagoya First Hosp, Dept Hematol & Oncol, Childrens Med Ctr, Nagoya, Aichi, Japan
[6] Saitama Childrens Med Ctr, Dept Hematol Oncol, Saitama, Japan
[7] Cent Cord Blood Bank, Osaka, Japan
[8] Miyagi Childrens Hosp, Hematol & Oncol, Sendai, Miyagi, Japan
[9] Osaka Univ, Grad Sch Med, Dept Biomed Stat, Osaka, Japan