[1] Nagoya Univ, Grad Sch Med, Dept Pediat, Nagoya, Aichi 4648601, Japan
[2] Natl Hosp Org, Nagoya Med Ctr, Clin Res Ctr, Nagoya, Aichi, Japan
[3] Tokyo Med & Dent Univ, Dept Pediat, Tokyo, Japan
[4] St Mariana Univ, Sch Med, Dept Pediat, Kawasaki, Kanagawa, Japan
[5] Shiga Univ Med Sci, Dept Pediat, Otsu, Shiga 52021, Japan
[6] Osaka Natl Hosp, Natl Hosp Org, Dept Pediat, Osaka, Japan
[7] Kyoto Prefectural Univ Med, Grad Sch Med Sci, Dept Mol Lab Med, Kyoto, Japan
[8] Gunma Childrens Med Ctr, Dept Hematol Oncol, Shibukawa, Japan
[9] Natl Ctr Child Hlth & Dev, Clin Res Ctr, Tokyo, Japan
[10] Kyoto Univ, Fac Med, Sch Human Hlth Sci, Nagoya, Aichi, Japan