Wulandari D., Department of Clinical Pathology, Immunoserological and Oncological Division, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia; Febrian R., Department of Clinical Pathology, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia; Dwipoerwantoro P.G., Department of Child Health, Gastroenterohepatology Division, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia; Kurniati N., Department of Child Health, Allergy and Immunological Division, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia