1. Yamaguchi University
2. Tokyo Medical University Hachioji Medical Center
3. National Institute of Infectious Diseases
4. Aichi Medical University
5. Kumamoto University
6. Akita University
7. Iwate Medical University
8. Yamagata University
9. Juntendo University
10. Tokyo Jikei University
11. Tokai University
12. University of Yamanashi (currently Juntendo University)
13. Nagoya City University
14. Fukui University
15. Kobe University
16. Shimane University
17. Kurume University
18. University of Miyazaki
19. Kinki University
20. Fukuoka University
21. Japanese Red Cross Hokkaido Block Blood Center
22. Japanese Red Cross Society
23. Japan Blood Products Organization
24. Kitasato University
25. The University of Tokyo
26. Fukushima Medical University