1. Department of Radiology and Research Institute of Radiology, Asan Liver Center, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea.
2. Department of Radiology, Namwon Medical Center, Namwon-si, Republic of Korea.
3. Division of Healthcare Technology Assessment Research, Department of Economic Evaluation, National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea.
4. Department of Pharmaceutical Science, World Health Organization Collaborating Center for Pharmaceutical Policy and Regulation, Utrecht University, Utrecht, The Netherlands.
5. Department of Imaging, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
6. Department of Gastroenterology, Liver Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.