1. Department of Internal Medicine, Division of Hepatology, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon 21431, Republic of Korea
2. Department of Internal Medicine, Division of Hepatology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul 06591, Republic of Korea
3. Department of Radiology, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon 21431, Republic of Korea
4. Department of Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon 21431, Republic of Korea