1. Department of Neurology, Kyung Hee University School of Medicine, Seoul, Korea.
2. Department of Biochemistry and Molecular Biology, Kyung Hee University School of Medicine, Seoul, Korea.
3. Department of Pathology, Kyung Hee University School of Medicine, Seoul, Korea.
4. Department of Thoracic and Cardiovascular Surgery, Kyung Hee University School of Medicine, Seoul, Korea.