1. Department of Microbiology, Faculty of Medicine, Catholic University of Atma Jaya, Jalan Pluit Raya 2, Jakarta 14440, Indonesia
2. Department of Microbiology, Faculty of Medicine, University of Indonesia, Jalan Pegangsaan Timur 16, Jakarta 10320, Indonesia
3. Department of Pediatrics, Faculty of Medicine, Neonatal Unit Dr. Cipto Mangunkusumo Hospital, University of Indonesia, Jalan Diponegoro 71, Jakarta 10430, Indonesia