1. Neuroscience Research Institute, Gachon University, Incheon, Korea.
2. Department of Biomedical Engineering, College of Health Science, Gachon University, Incheon, Korea.
3. Department of Neurology, Gachon University Gil Medical Center, Incheon, Korea.
4. Department of Neurosurgery, Gachon University Gil Medical Center, Incheon, Korea.