1. Division of Hepatogastroenterology, Department of Internal Medicine; Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine; Kaohsiung Taiwan
2. Division of Hematology-Oncology, Department of Internal Medicine; Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine; Kaohsiung Taiwan
3. Graduate Institute of Health Care; Meiho University; Pingtung Taiwan