1. Department of Clinical Laboratory and Internal Medicine, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
2. National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, Nagasaki City, Japan
3. Department of Neurology, Oita Prefectural Hospital, Oita, Japan
4. Department of Neurology, Nihon University Itabashi Hospital, Tokyo, Japan
5. Department of Neurology, Okayama University Hospital, Okayama, Japan
6. Department of Neurology, Hokkaido University Hospital, Hokkaido, Japan
7. Department of Neurology, National Hospital Organization Beppu Medical Center, Oita, Japan
8. Department or Neurology, Kurashiki Central Hospital, Okayama, Japan
9. Department of Neurology, Tenri Hospital, Nara, Japan
10. Division of Neurology, Jichi Medical University Hospital, Tochigi, Japan
11. Department of Neurology, Nara Medical University Hospital, Nara, Japan
12. Department of Neurology, University of Fukui Hospital, Fukui, Japan
13. Aomori Prefectural Central Hospital, Aomori, Japan
14. Department of Neurology, National Hospital Organization Shinshu Ueda Medical Center, Nagano, Japan
15. Department of Neurology, National Hospital Organization Asahikawa Medical Center, Hokkaido, Japan
16. Department of Neurology, Southern Tohoku General Hospital, Fukushima, Japan
17. Vaccine Medical Affairs, Pfizer Japan Inc, Tokyo, Japan
18. Medical Affairs, CSL Behring, Tokyo, Japan
19. Vaccines, Antivirals, and Evidence Generation, Pfizer Vaccines, Collegeville, PA, USA
20. Vaccines, Antivirals, and Evidence Generation, Pfizer Vaccines, Vienna, Austria
21. Vaccines, Antivirals, and Evidence Generation, Pfizer Vaccines, London, UK
22. Vaccines, Antivirals, and Evidence Generation, Pfizer Vaccines, Paris, France
23. Department of Neurology, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan