1 Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC; Division of Gastroenterology & Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
2 Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC; Division of Gastroenterology & Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC. Electronic address: jcluo@vghtpe.gov.tw.