1. Department of Internal Medicine, International St. Mary’s Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea
2. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
3. Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
4. Liver Cancer Special Clinic, Yonsei University College of Medicine, Seoul, Korea
5. Liver Cirrhosis Clinical Research Center, Yonsei University College of Medicine, Seoul, Korea
6. Department of Biostatistics, Yonsei University College of Medicine, Seoul, Korea
7. Brain Korea 21 Project for Medical Science, Seoul, Korea