1. Department of Neurology, Gyeongsang National University School of Medicine, Jinju, Korea.
2. Department of Neurosurgery, Gyeongsang National University School of Medicine, Jinju, Korea.
3. Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, Korea.
4. Department of Radiology, Gyeongsang National University School of Medicine, Jinju, Korea.