[1] Fujita Hlth Univ, Dept Pediat, Sch Med, Toyoake, Aichi, Japan
[2] Nippon Med Sch, Dept Pediat, Tokyo, Japan
[3] Hokkaido Med Ctr Child Hlth & Rehabil, Sapporo, Hokkaido, Japan
[4] TMDU, Dept Pediat & Developemental Biol, Tokyo, Japan
[5] Kyushu Univ, Grad Sch Med Sci, Dept Pediat, Fukuoka, Japan
[6] Ehime Univ, Dept Pediat, Grad Sch Med, Toon, Japan
[7] Natl Ctr Child Hlth & Dev, Pediat Canc Ctr, Tokyo, Japan
[8] Kyoto Prefectural Univ Med, Grad Sch Med Sci, Dept Pediat, Kyoto, Japan
[9] Uji Tokushukai Med Ctr, Dept Lab Med, Uji, Kyoto, Japan
[10] Juntendo Univ, Dept Pediat, Sch Med, Tokyo, Japan
[11] Iwate Med Univ, Dept Pediat, Morioka, Iwate, Japan
[12] Okayama Univ, Grad Sch Med, Dept Paediat, Okayama, Japan
[13] Osaka Univ, Grad Sch Med, Dept Pediat, Suita, Osaka, Japan
[14] Natl Kyushu Canc Ctr, Dept Pediat, Fukuoka, Japan
[15] Osaka Womens & Childrens Hosp, Dept Hematol Oncol, Osaka, Japan
[16] Tokyo Metropolitan Canc & Infect Dis Ctr Komagome, Div Pediat, Tokyo, Japan
[17] Jichi Med Univ Med, Dept Pediat, Shimotsuke, Tochigi, Japan