[1] Mahidol Univ, Ramathibodi Hosp, Fac Med, Div Gastroenterol,Dept Pediat, Bangkok, Thailand
[2] Mahidol Univ, Fac Med, Excellence Ctr Organ Transplantat, Ramathibodi Hosp, Bangkok, Thailand
[3] Mahidol Univ, Fac Med, Dept Pediat, Div Child Dev,Ramathibodi Hosp, Bangkok, Thailand