[1] Universitas Gadjah Mada/Dr. Sardjito Hospital,Pediatric Surgery Division, Department of Surgery, Faculty of Medicine, Public Health and Nursing
[2] Universitas Gadjah Mada/UGM Academic Hospital,Department of Child Health, Faculty of Medicine, Public Health and Nursing
[3] Universitas Gadjah Mada/Dr. Sardjito Hospital,Department of Child Health, Faculty of Medicine, Public Health and Nursing