1. Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
2. Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
3. Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
4. Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
5. Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea