1. Division of Pediatric Cardiac Surgery, Asan Medical Center, University of Ulsan College of Medicine
2. Division of Pediatric Cardiology, Asan Medical Center, University of Ulsan College of Medicine
3. Division of Radiology, Asan Medical Center, University of Ulsan College of Medicine
4. Department of Thoracic and Cardiovascular Surgery, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine