1. Department of Virology II, National Institute of Infectious Diseases, Japan
2. Fukuoka City Institute for Hygiene and Environment, Japan
3. Osaka City Institute of Public Health and Environmental Science, Japan
4. Fukushima Prefectural Institute of Public Health and Environmental Science, Japan
5. Hiroshima Prefectural Institute of Public Health and Environmental Science, Japan
6. Saitama Institute of Public Health, Japan
7. Kagawa Prefectural Institute of Public Health, Japan
8. Fukuoka Institute of Health and Environmental Sciences, Japan
9. Miyazaki Prefectural Institute of Public Health and Environmental Science, Japan
10. Ehime Prefectural Institute of Public Health and Environmental Science, Japan
11. Hiroshima City Institute of Public Health, Japan
12. Okayama Prefectural Institute of Public Health and Environmental Science, Japan
13. Aichi Prefectural Institute of Public Health, Japan
14. Kochi Prefectural Institute of Public Health, Japan
15. Ishikawa Prefectural Institute of Public Health and Environmental Science, Japan
16. Hyogo Prefectural Institute of Public Health, Japan
17. Yokohama City Institute of Public Health, Japan
18. Tottori Prefectural Public Health Laboratory, Japan
19. Shiga Prefectural Institute of Public Health and Environmental Science, Japan
20. Toyama Prefectural Institute of Public Health, Japan
21. Tokyo Metropolitan Research Laboratory of Public Health, Japan
22. Gunma Prefectural Institute of Public Health and Environmental Sciences, Japan
23. Shimane Prefectural Institute of Public Health and Environmental Science, Japan