1. Department of Neurology, Chungbuk National University School of Medicine, Cheongju, Korea.
2. Department of Nephrology, Chungbuk National University School of Medicine, Cheongju, Korea.
3. Department of Clinical Laboratory, Chungbuk National University School of Medicine, Cheongju, Korea.
4. Department of Radiology, Chungbuk National University School of Medicine, Cheongju, Korea.
5. Department of Neurology, Sun General Hospital, Deajeon, Korea.
6. Department of Neurology, Myongji Hospital, Kwandong University School of Medicine, Goyang, Korea.