1. Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, Korea.
2. Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.
3. Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea.
4. Department of Pediatrics, Gachon Institute of Genome Medicine and Science, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea.