Lazarus G., Department of Child Health, Gastrohepatology Division, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Putra I.G.N.S., Department of Child Health, Gastroenterology and Hepatology Division, Medical School, Universitas Udayana, Bali, Indonesia; Junaidi M.C., Department of Child Health, Gastrohepatology Division, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Oswari J.S., Department of Child Health, Gastrohepatology Division, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Oswari H., Department of Child Health, Gastrohepatology Division, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia