1. Division of Hepatogastroenterology, Department of Internal Medicine, Chi Mei Medical Center, Tainan, Taiwan
2. Division of Hematology and Oncology, Department of Internal Medicine, Chi Mei Medical Center, Tainan, Taiwan
3. Department of Pathology, Chi Mei Medical Center, Tainan, Taiwan
4. Department of Radiology, Chi Mei Medical Center, Tainan, Taiwan