1. Department of Radiology, Seoul National University Hospital, 101 Daehak-Ro, Jongno-gu, Seoul 03080, Korea.
2. Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.
3. Institute of Radiation Medicine, Seoul National University Hospital, Seoul, Korea.
4. Department of Radiology, Chung-Ang University Hospital, Seoul, Korea.
5. Department of Surgery, Seoul National University Hospital, Seoul, Korea.
6. Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea.
7. Department of Internal Medicine and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.
8. Department of Radiation Oncology, Ewha Woman's University School of Medicine, Seoul, Korea.
9. Department of Pathology, Seoul National University Hospital, Seoul, Korea.