1 Division of Gastroenterology and Hepatology, Department of Internal Medicine, and, Hepatitis Research Center, and, Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan.
2 Division of Gastroenterology and Hepatology, Department of Internal Medicine, and, Hepatitis Research Center, and, Department of Medical Research, National Taiwan University Hospital, and, Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan.