1. Division of Hepatico Biliary Pancreatic Surgery, Department of Surgery, Chonnam National University Medical School, Gwangju, Korea.
2. Department of Surgery, Mokpo Christian Hospital, Mokpo, Korea.
3. Department of Radiology, Chonnam National University Medical School, Gwangju, Korea.
4. Department of Pathology, Chonnam National University Medical School, Gwangju, Korea.