1. Division of Cardiology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
2. Division of Hepatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
3. Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
4. Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea.