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 Pediatrics, Faculty of Medicine, Public Health and Nursing , Universitas Gadjah Mada , Yogyakarta , Indonesia
4. Department of Pediatric , Dr. Sardjito Hospital , Yogyakarta , Indonesia
5. Department of Pediatric and Maternity Nursing, Faculty of Medicine, Public Health and Nursing , 95455 Universitas Gadjah Mada , Yogyakarta , Indonesia