1 Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
2 Ainex Corporation, Seoul, Korea.
3 Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea.
4 Department of Internal Medicine and Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea.
5 Department of Clinical Pharmacology and Therapeutics, Seoul National University Bundang Hospital, Seongnam, Korea.