1. Assistant Professor, Department of Pediatric Dentistry; Faculty of Dentistry; Khon Kaen University; Khon Kaen Thailand
2. Assistant Professor, Department of Anesthesiology; Faculty of Medicine; Khon Kaen University; Khon Kaen Thailand
3. Postgraduate student, Department of Pediatric Dentistry, Faculty of Dentistry; Khon Kaen University; Khon Kaen Thailand