1. Department of Child’s Health, Faculty of Medicine Padjadjaran University/Dr. Hasan Sadikin General Hospital, Bandung, Indonesia
2. Pediatric Resident Department of Child’s Health, Faculty of Medicine Padjadjaran University/Dr. Hasan Sadikin General Hospital, Bandung, Indonesia
3. Pediatric Surgery Division, Department of Surgery, Faculty of Medicine Padjadjaran University/Dr. Hasan Sadikin General Hospital, Bandung, Indonesia