1. Department of Diagnostic Radiology, National Cheng-Kung University Hospital, Tainan 704, Taiwan, R.O.C.
2. Liver Cancer Collaborative Oncology Group, National Cheng-Kung University Hospital, Tainan 704, Taiwan, R.O.C.
3. Department of Internal Medicine, National Cheng-Kung University Hospital, Tainan 704, Taiwan, R.O.C.