[1] Chiba Univ, Grad Sch Med, Dept Pediat, Chiba, Japan
[2] Yokohama City Univ, Grad Sch Med, Dept Pediat, Yokohama, Japan
[3] Gunma Univ, Grad Sch Med, Dept Pediat, Maebashi, Japan
[4] Univ Tokyo, Grad Sch Med, Dept Pediat, Tokyo, Japan
[5] Natl Canc Ctr, Div Canc Evolut, Tokyo, Japan
[6] Kyoto Univ, Grad Sch Med, Dept Pathol & Tumor Biol, Kyoto, Japan
[7] Kyoto Univ, Inst Adv Study Human Biol WPI ASHBi, Kyoto, Japan
[8] Karolinska Inst, Ctr Hematol & Regenerat Med, Dept Med, Stockholm, Sweden
[9] Jobu Univ, Inst Physiol & Med, Takasaki, Japan
[10] Mie Univ, Dept Pediat, Tsu, Japan
[11] Kyorin Univ, Fac Hlth Sci, Dept Med Technol, Mitaka, Japan
[12] Jichi Med Univ, Dept Pediat, Shimotsuke, Japan
[13] NHO Nagoya Med Ctr, Clin Res Ctr, Nagoya, Japan
[14] Higashiosaka Aramoto Heiwa Clin, Higashiosaka, Japan
[15] Shiga Univ Med Sci, Dept Pediat, Shiga, Japan
[16] Kyoto Univ, Dept Human Hlth Sci, Kyoto, Japan
[17] Natl Ctr Child Hlth & Dev, Childrens Canc Ctr, Div Leukemia & Lymphoma, Tokyo, Japan
[18] Chiba Univ, Grad Sch Med, Dept Pediat, 1 8 1 Inohana,Chuo Ku, Chiba 2608670, Japan