1. Department of Radiology and Research Institute of Radiology; University of Ulsan College of Medicine, Asan Medical Center; Seoul Korea
2. Department of Radiology; University of Ulsan College of Medicine, Ulsan University Hospital; Ulsan Korea
3. Department of Pathology ; University of Ulsan College of Medicine, Asan Medical Center; Seoul Korea
4. Department of Pathology; University of Ulsan College of Medicine, Ulsan University Hospital; Ulsan Korea