1. Division of Gastroenterology and Hepatology; Department of Internal Medicine; Kaohsiung Veterans General Hospital and National Yang-Ming University; Kaohsiung Taiwan
2. Division of Gastroenterology and Hepatology; Department of Internal Medicine; Ping-Tung Christian Hospital; Ping-Tung county Taiwan
3. Division of Gastroenterology; Department of Internal Medicine; Kaohsiung Medical University Hospital; Kaohsiung Taiwan
4. Taiwan Acid-related Disease (TARD) Study Group
5. Division of Gastroenterology; Department of Internal Medicine; Kaohsiung Chang Gung Memorial Hospital; and Chang Gung University; College of Medicine; Kaohsiung Taiwan
6. Division of Gastroenterology; Department of Internal Medicine; National Taiwan University Hospital; Taipei Taiwan
7. Division of Gastroenterology; Department of Internal Medicine; Far Eastern Memorial Hospital; Taipei Taiwan
8. Division of Gastroenterology and Hepatology; Department of Internal Medicine; Taichung Veterans General Hospital; Taichung Taiwan
9. Hualian Tzu-Chi Medical Center; Hualian county Taiwan
10. Division of Gastroenterology; Department of Internal Medicine; Shin Kong Wu Ho-Su Memorial Hospital; Taipei Taiwan