1. Department of Radiology, Chung-Ang University Hospital, Seoul, Republic of Korea.
2. Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
3. Department of Radiology, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea.
4. Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
5. Department of Radiology and Research Institute of Radiological Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
6. Department of Radiology, Korea University Ansan Hospital, Ansan, Republic of Korea.