[1] Tokyo Metropolitan Childrens Med Ctr, Dept Pediat, Div Infect Dis, 2-8-29 Musashidai, Fuchu, Tokyo 1838561, Japan
[2] Tokyo Metropolitan Childrens Med Ctr, Div Clin Res Support Ctr, Fuchu, Tokyo, Japan
[3] Tokyo Metropolitan Childrens Med Ctr, Dept Pharm, Fuchu, Tokyo, Japan
[4] Tokyo Metropolitan Childrens Med Ctr, Div Microbiol, Dept Clin Lab, Fuchu, Tokyo, Japan
[5] Tokyo Metropolitan Childrens Med Ctr, Div Hematol Oncol, Dept Pediat, Fuchu, Tokyo, Japan
[6] Shizuoka Childrens Hosp, Dept Pediat, Div Infect Dis, Shizuoka, Shizuoka, Japan
[7] Aichi Childrens Hlth & Med Ctr, Dept Gen Pediat, Obu City, Aichi, Japan