1. Department of Neurology, Okayama University, Okayama, Japan
2. Department of Neurology, Okayama City Hospital, Okayama, Japan
3. Department of Neurology, Gunma University, Graduate School of Medicine, Maebashi, Japan
4. Department of Neurology, Geriatrics Research Institute and Hospital, Maebashi, Japan
5. Department of Neurology, Ako Chuo Hospital, Ako, Japan
6. Division of Neurology, Department of Medicine, Showa University, School of Medicine, Tokyo, Japan
7. Department of Neurology, Faculty of Medicine, Oita University, Oita, Japan
8. Department of Neurology, Kurashiki Heisei Hospital, Kurashiki, Japan
9. Department of Neurology, Himeji Central Hospital, Himeji, Japan
10. Membrane Protein and Ligand Analysis Center, Protosera Inc., Osaka, Japan