1. Department of Pathology, Pochon CHA University College of Medicine, Pundang, Korea.
2. Department of Neurology, Pochon CHA University College of Medicine, Pundang, Korea.
3. Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Radiology, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Pathology, Yonsei University College of Medicine, Seoul, Korea.