[1] Kyoto Prefectural Univ Med, Grad Sch Med Sci, Dept Pediat, Kamigyo Ku, 465 Kajii Cho, Kyoto 6028566, Japan
[2] Gifu Municipal Hosp, Dept Pediat, 7-1 Kashima Cho, Gifu 5008513, Japan
[3] Kobe Univ, Dept Pediat, Chuo Ku, 7-5-1 Kusunoki Cho, Kobe, Hyogo 6500017, Japan
[4] Univ Fukui Hosp, Fac Med Sci, Dept Pediat, 23-3 Matsuoka Shimoaizuki, Eiheiji, Fukui 9101193, Japan
[5] Akita Univ Hosp, Dept Pediat, 44-2 Hasunuma, Hirozura, Akita 0108543, Japan
[6] Shizuoka Canc Ctr, Dept Pediat, 1007 Shimonagakubo, Shunto, Shizuoka 4118777, Japan
[7] Tokyo Metropolitan Childrens Med Ctr, Dept Pediat Hematol & Oncol, 2-8-29 Musashidai, Fuchu, Tokyo 1838561, Japan
[8] Osaka Womens & Childrens Hosp, Dept Pediat Hematol Oncol, 840 Murodo, Izumi, Osaka 5941101, Japan
[9] Sapporo Hokuyu Hosp, Dept Pediat, Shiroishi Ku, 6-6-5-1 Higashisapporo, Sapporo, Hokkaido 0030006, Japan
[10] Jikei Univ, Dept Pediat, Sch Med, Minato Ku, 3-19-18 Nishi Shinbashi, Tokyo 1058471, Japan
[11] Kagoshima City Hosp, Dept Pediat, 37-1 Uearatacho, Kagoshima 8908760, Japan
[12] Okinawa Prefectural Med Ctr, Pediat Hematol & Oncol Dept, 118-1 Shinkawa, Shimajiri, Okinawa 9011193, Japan
[13] Childrens Med Ctr, 118-1 Shinkawa, Shimajiri, Okinawa 9011193, Japan
[14] Akabane Zaitaku Clin, Kita Ku, 2-69-6 Akabane, Tokyo 1150045, Japan
[15] Tokyo Med & Dent Univ, Dept Pediat & Dev Biol, Bunkyo Ku, 1-5-45 Yushima, Tokyo 1138519, Japan
[16] Dokkyo Med Univ, Dept Pediat, Sch Med, 880 Kita Kobayashi, Mibu, Tochigi 3210293, Japan