1. Department of Pediatrics, Keimyung University School of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea.
2. Department of Neurosurgery, Keimyung University School of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea.
3. Department of Radiology, Keimyung University School of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea.
4. Department of Pathology, Keimyung University School of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea.