1. Doctorate Program in Medical and Health Sciences, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
2. Panti Rapih Yogyakarta School of Health Sciences, Yogyakarta, Indonesia
3. Department of Pediatric and Maternity Nursing, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
4. Department of Pediatrics, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
5. Department of Pediatric, Dr. Sardjito Hospital, Yogyakarta, Indonesia