1. Department of Diagnostic Radiology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Hwasun 519-763, Korea.
2. Department of Diagnostic Radiology, Chonnam National University Medical School, Chonnam National University Hospital, Gwangju 501-757, Korea.
3. Department of Pathology, Chonnam National University Medical School, Chonnam National University Hospital, Gwangju 501-757, Korea.
4. Department of Surgery, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Hwasun 519-763, Korea.