[1] Univ Tokyo, Dept Cell Therapy & Transplantat Med, Tokyo, Japan
[2] Univ Tokyo, Dept Hematol & Oncol, Tokyo, Japan
[3] Univ Tokyo, Dept Regenerat Med Hematopoiesis, Tokyo, Japan
[4] Univ Tokyo, Dept Pediat, Tokyo, Japan
[5] Gunma Childrens Med Ctr, Dept Hematol & Oncol, Gunma, Japan