1. Department of Microbiology, National Taiwan University College of Medicine, Taipei 10002, Taiwan, China
2. Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei 10002, Taiwan, China
3. Department of Internal Medicine, National Taiwan University Hospital, Taipei 10002, Taiwan, China
4. Hepatitis Research Center, National Taiwan University Hospital, Taipei 10002, Taiwan, China
5. Department of Medical Research, National Taiwan University Hospital, Taipei 10002, Taiwan, China