1. Division of Internal Medicine, Kaohsiung Municipal Hsiao‐Kang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
2. Department of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
3. Division of Gastroenterology Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
4. Department of Nursing, Kaohsiung Municipal Hsiao‐Kang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
5. Department of Pathology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
6. Department of Microbiology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan