[1] Nagoya Univ, Dept Pediat, Grad Sch Med, Nagoya, Aichi 4668550, Japan
[2] Japanese Red Cross Nagoya First Hosp, Dept Hematol & Oncol, Childrens Med Ctr, Nagoya, Aichi, Japan
[3] Shiga Univ Med Sci, Dept Pediat, Otsu, Shiga 52021, Japan
[4] Kanagawa Childrens Hosp, Dept Hematol Oncol, Yokohama, Kanagawa, Japan
[5] Kyoto Univ, Grad Sch Med, Kyoto, Japan
[6] Osaka Med Ctr, Dept Hematol Oncol, Osaka, Japan
[7] Res Inst Maternal & Child Hlth, Osaka, Japan
[8] Shiga Med Ctr Children, Dept Hematol Oncol, Moriyama, Japan
[9] Kyushu Univ, Dept Pediat, Grad Sch Med, Fukuoka 812, Japan
[10] Tokai Univ, Sch Med, Dept Cell Transplantat & Regenerat Med, Isehara, Kanagawa 25911, Japan
[11] Mie Univ, Dept Pediat, Grad Sch Med, Tsu, Mie 514, Japan
[12] Natl Ctr Child Hlth & Dev, Div Hematol Oncol, Tokyo, Japan
[13] Niigata Canc Ctr Hosp, Dept Pediat, Niigata, Japan
[14] St Marianna Univ, Dept Pediat, Sch Med, Kawasaki, Kanagawa, Japan
[15] Osaka City Gen Hosp, Dept Pediat Hematol Oncol, Osaka, Japan
[16] Ibaraki Childrens Hosp, Dept Hematol Oncol, Mito, Ibaraki, Japan
[17] Nagoya Univ, Grad Sch Med, Dept Hematopoiet Stem Cell Transplantat Data Mana, Nagoya, Aichi 4668550, Japan
[18] Shizuoka Childrens Hosp, Div Hematol & Oncol, Shizuoka, Japan