[1] Kyoto Univ, Dept Pediat, Kyoto, Japan
[2] Kyoto Katsura Hosp, Kyoto, Japan
[3] Natl Hosp Org Nagoya Med Ctr, Clin Res Ctr, Nagoya, Aichi, Japan
[4] Kyoto Univ, Human Hlth Sci, Kyoto, Japan
[5] Natl Ctr Child Hlth & Dev, Div Leukemia & Lymphoma, Tokyo, Japan
[6] Yokohama City Univ, Dept Pediat, Yokohama, Kanagawa, Japan
[7] Jobu Univ, Inst Physiol & Med, Takasaki, Gumma, Japan
[8] Kyoto Univ, Dept Pathol & Tumor Biol, Kyoto, Japan
[9] Kyoto Univ, Inst Adv Study Human Biol WPI ASHBi, Kyoto, Japan
[10] Karolinska Inst, Ctr Hematol & Regenerat Med, Dept Med, Stockholm, Sweden