1Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
2Kaohsiung Municipal HsiaoKang Hospital, Kaohsiung, Taiwan
3Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan
4Division of Hepato-Gastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
5Department of Internal Medicine, Kaohsiung Municipal HsiaoKang Hospital, Kaohsiung, Taiwan
6Division of Gastroenterology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
7Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan