[1] FrieslandCampina Amersfoort, Amersfoort, Netherlands
[2] Fudan Univ, Childrens Hosp, Dept Gastroenterol & Endoscopy Room, Shanghai, Peoples R China
[3] Univ Kelaniya, Facult Med, Peadiatr, Colombo, Sri Lanka
[4] Emma Childrens Hosp, AMC, Dept Pediat Gastroenterol & Nutr, Amsterdam, Netherlands