1. Department of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo 162-8640, Japan
2. Department of Neurology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Bunkyo-ku, Tokyo 113-8677, Japan
3. Department of Medical Data Science, Graduate School of Medicine, Wakayama Medical University, Wakayama 641-8509, Japan
4. Department of Pathology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo 162-8640, Japan
5. Department of Pathology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Bunkyo-ku, Tokyo 113-8677, Japan
6. Department of Radiology, Tokushima University School of Medicine, Tokushima 770-8503, Japan
7. Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Bunkyo-ku, Tokyo 113-8677, Japan
8. Department of Neurology and Neurological Science, Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences, Bunkyo-ku, Tokyo 113-8510, Japan
9. Department of Neurology, Kouhoukai Takagi Hospital, Okawa-shi 831-0016, Fukuoka, Japan
10. Department of Neurology, Hokuriku Brain and Neuromuscular Disease Center, National Hospital Organization Iou National Hospital, Kanazawa-shi 920-0192, Ishikawa, Japan
11. Department of Neurology, Kanazawa Medical University, Kahoku-gun 920-0293, Ishikawa, Japan
12. Department of Neurology, National Hospital Organization Saitama Hospital, Wako-shi 351-0102, Saitama, Japan
13. Department of Neurology, Saitama Medical Center, Saitama Medical University, Kawagoe-shi 350-8550, Saitama, Japan
14. Department of Neurology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan
15. Division of Public Health, Center for Community Medicine, Jichi Medical University, Shimotsuke-shi 329-0498, Tochigi, Japan
16. Department of Infectious Diseases, Kobe Institute of Health, Kobe-shi 650-0046, Hyogo, Japan
17. Higashimatsuyama Municipal Hospital, Higashimatsuyama-shi 355-0005, Saitama, Japan
18. Department of Neurology, Narita Tomisato Tokushukai Hospital, Tomisato-shi 286-0201, Chiba, Japan
19. Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira-shi, Tokyo 187-8551, Japan
20. Division of Neurology, Department of Internal Medicine, Kudanzaka Hospital, Chiyoda-ku, Tokyo 102-0074, Japan
21. Department of Laboratory Medicine, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira-shi, Tokyo 187-8551, Japan
22. Department of General Internal Medicine, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira-shi, Tokyo 187-8551, Japan
23. Medical Affairs Department, Health and Welfare Bureau, Sapporo-shi 060-0042, Hokkaido, Japan