1. Department of Radiology and Research Institute of Radiology Asan Medical Center University of Ulsan College of Medicine Seoul Republic of Korea
2. Liver Cancer Center Asan Medical Center Seoul Republic of Korea
3. Department of Internal Medicine University of Texas Southwestern Medical Center Dallas Texas USA
4. Department of Radiology University of Texas Southwestern Medical Center Dallas Texas USA
5. Department of Clinical Epidemiology and Biostatistics Asan Medical Center University of Ulsan College of Medicine Seoul Republic of Korea
6. Department of Gastroenterology Liver Center Asan Medical Center University of Ulsan College of Medicine Seoul Republic of Korea