1. Department of Diagnostic Radiology, Yonsei University College of Medicine, Yongdong Severance Hospital, Seoul, Korea.
2. Research Institute of Radiological Science, Yonsei University, Seoul, Korea.
3. Department of Diagnostic Radiology, Yonsei University, Wonju College of Medicine, Wonju, Korea.
4. Department of Pathology, Yonsei University College of Medicine, Yongdong Severance Hospital, Seoul, Korea.
5. Department of Diagnostic Radiology, Gachon Medical School, Ghil Medical Center, Inchon, Korea.