Affiliation: | 1. Department of Radiology, Dongtan Sacred Heart Hospital, Hallym University Medical Center, Hwaseong, South Korea;2. Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea;3. Department of Pediatrics, University of Ulsan College of Medicine, Asan Medical Center, Children's Hospital, Seoul, South Korea |