1. Department of Neurosurgery, Juntendo University, Bunkyo-ku, Tokyo, Japan
2. Department of Neurology, Juntendo University, Bunkyo-ku, Tokyo, Japan
3. Department of Neurology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto, Japan
4. Department of Molecular Pathobiology of Brain Diseases, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto, Japan
5. Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, Japan