1. Department of Neurology, Myongji Hospital, College of Medicine, Kwandong University, Goyang, Korea.
2. Department of Radiology, Myongji Hospital, College of Medicine, Kwandong University, Goyang, Korea.
3. Department of Pathology, Myongji Hospital, College of Medicine, Kwandong University, Goyang, Korea.
4. Department of Pathology, Seoul National University Hospital, Seoul, Korea.
5. Department of Neurology, Hallym University, Ilsong Institute of Life Science, Pyongchon, Korea.