1. Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niaosong District, Kaohsiung 833, Taiwan
2. College of Medicine, Chang Gung University, Kaohsiung 333, Taiwan
3. Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niaosong District, Kaohsiung 833, Taiwan
4. Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niaosong District, Kaohsiung 833, Taiwan
5. Division of Hepato-Gastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niaosong District, Kaohsiung 833, Taiwan