1 Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea. parksh.radiology@gmail.com.
2 Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.
3 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
4 Department of Radiology and Institute for Biomedical Informatics, University of Pennsylvania, Philadelphia, PA, USA.
5 Department of Radiology, New York University Grossman School of Medicine, New York, NY, USA.