1. Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
2. Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
3. Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Korea
4. Department of Pathology, Laboratory of Epigenetics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
5. Department of Microbiology, Hanyang University College of Medicine, Seoul, Korea