1 Department of Pathology, MacKay Memorial Hospital, Taipei, Taiwan, ROC.
2 Department of Medicine, MacKay Medical College, New Taipei City, Taiwan, ROC.
3 Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
4 Faculty of Medicine and Institute of Emergency and Critical Medicine, National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan, ROC.