1. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
2. Liver Cirrhosis Clinical Research Center, Seoul, Korea.
3. Department of Pathology, Yonsei University College of Medicine, Seoul, Korea.
4. Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.
5. Liver Cancer Special Clinic, Yonsei University College of Medicine, Seoul, Korea.