[1] Ajou Univ, Sch Med, Dept Pediat, Suwon 441749, South Korea
[2] Yonsei Univ, Coll Med, Epilepsy Res Inst,Dept Pediat,Div Pediat Neurol, Severance Childrens Hosp,Pediat Epilepsy Clin, Seoul, South Korea
[3] Yonsei Univ, Coll Med, Severance Hosp, Div Dietet, Seoul, South Korea