I am professor in the Department of Internal Medicine at Haeundae Paik Hospital Inje University College in Busan, Republic of Korea. I am a member of several societies including Korean Association of Internal Medicine, Korean Association for the Study of the Liver, Korean Liver Cancer Study Group, Korean Society of Gastroenterology and Gastrointestinal Endoscopy. I am interested in the clinical research of viral hepatitis, cirrhosis, and HCC.