[1] Osaka City Gen Hosp, Dept Pediat Endocrinol & Metab, Childrens Med Ctr, Osaka, Japan
[2] Keio Univ, Dept Pediat, Sch Med, Tokyo, Japan
[3] Kojiya Child Clin, Tokyo, Japan
[4] Tokyo Metropolitan Childrens Med Ctr, Dept Med Genet, Tokyo, Japan
[5] Natl Res Inst Child Hlth & Dev, Dept Mol Endocrinol, Tokyo, Japan