1. Department of Internal Medicine; National Taiwan University Hospital; National Taiwan University College of Medicine; Taipei Taiwan
2. Department of Internal Medicine; E-DA Hospital and I-Shou University; Kaohsiung County Taiwan
3. Department of Internal Medicine; Kaohsiung Municipal Ta-Tung Hospital; Kaohsiung Medical University; Kaohsiung Taiwan
4. Division of Gastroenterology; Department of Internal Medicine; Mackay Memorial Hospital; Taitung Taiwan
5. Department of Nursing; Meiho University; Pingtung Taiwan
6. School of Medicine; Fu Jen Catholic University; New Taipei City Taiwan