1. Department of Clinical Pathology, Immunoserological and Oncological Division, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia.
2. Department of Clinical Pathology, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia.
3. Department of Child Health, Gastroenterohepatology Division, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia.
4. Department of Child Health, Allergy and Immunological Division, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia.