1. Department of Radiology; Ajou University Medical Center, Ajou University School of Medicine; Suwon South Korea
2. Department of Radiology and the Research Institute of Radiology; University of Ulsan College of Medicine, Asan Medical Center; Seoul South Korea
3. Department of Surgery, Division of Hepatobiliary and Liver Transplantation Surgery, Asan Medical Center; University of Ulsan College of Medicine; Seoul South Korea