1. Division of Gastroenterology and Hepatology, E‐Da Cancer Hospital I‐Shou University Kaohsiung Taiwan
2. School of Medicine, College of Medicine, I‐Shou University Kaohsiung Taiwan
3. Department of Public Health National Cheng Kung University, College of Medicine Tainan Taiwan
4. Division of Gastroenterology and Hepatology E‐Da Hospital, I‐Shou University Kaohsiung Taiwan