[1] Kurume Univ, Sch Med, Dept Pediat & Child Hlth, Kurume, Fukuoka 8300011, Japan
[2] Kurume Univ, Sch Med, Dept Internal Med, Div Cardiovasc Med,Cardiovasc Res Inst, Kurume, Fukuoka 8300011, Japan
[3] Kurume Univ, Sch Med, Dept Radiol, Kurume, Fukuoka 8300011, Japan