1. Division of Hepatogastroenterology, Department of Internal Medicine; Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine; Kaohsiung Taiwan
2. Graduate Institute of Clinical Medical Sciences, College of Medicine; Chang Gung University; Taoyuan Taiwan
3. Division of Hepatogastroenterology, Department of Internal Medicine; Chiayi Chang Gung Memorial Hospital; Chiayi Taiwan