1. Division of Allergy Immunology, Department of Child Health, Doctoral Study Program, Faculty of Medicine Universitas Padjadjaran, Bandung 40161, West Java, Indonesia
2. Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
3. Department of Clinical Pathology, Faculty of Medicine Universitas Padjadjaran, Hasan Sadikin General Hospital, Bandung 40161, West Java, Indonesia
4. Division of Respirology, Department of Child Health, Faculty of Medicine Universitas Padjadjaran, Hasan Sadikin General Hospital, Bandung 40161, West Java, Indonesia
5. Division of Allergy Immunology, Department of Child Health, Faculty of Medicine Universitas Padjadjaran, Hasan Sadikin General Hospital, Bandung 40161, West Java, Indonesia