Affiliation: | 1. Department of Radiology, Ewha Womans University, School of Medicine, Seoul, Korea;2. Department of Radiology, Research Institute of Radiological Science, Yonsei University, College of Medicine, Seoul, Korea;3. Department of Biostatistics Collaboration Unit, Gangnam Severance Hospital, Biomedical Research Center, Yonsei University, College of Medicine, Seoul, Korea;4. Department of Radiology, CHA Bundang Medical Center, CHA University, College of Medicine, Sungnam, Korea |