Institution: | 1. Department of Radiology, Cheil General Hospital & Women's Healthcare Center, Sungkyunkwan University School of Medicine, Seoul, Korea.;2. Department of Radiology, Seoul National University College of Medicine, and The Institute of Radiation Medicine, Seoul, Korea;3. Department of Pediatrics, Cheil General Hospital and Women's Healthcare Center, Sungkyunkwan University School of Medicine, Seoul, Korea |