Oswari, H., Department of Child Health, Cipto Mangunkusumo Hospital-Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, 10430, Indonesia; Kresnawati, W., Department of Child Health, Cipto Mangunkusumo Hospital-Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, 10430, Indonesia; Yani, A., Department of Pediatric Surgery, Cipto Mangunkusumo Hospital-Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Handjari, D.R., Department of Pathology Anatomy, Cipto Mangunkusumo Hospital-Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Alatas, F.S., Department of Child Health, Cipto Mangunkusumo Hospital-Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, 10430, Indonesia