1. Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo
2. Department Respiratory Medicine, National Center for Global Health and Medicine, Tokyo
3. Department of Infectious Diseases, Keio University School of Medicine, Tokyo
4. Department of Pathology, National Institute of Infectious Diseases, Tokyo
5. Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo
6. Department of Veterinary Science, National Institute of Infectious Diseases, Tokyo
7. AIDS Research Center, National Institute of Infectious Diseases, Tokyo
8. Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo
9. Department of Virology I, National Institute of Infectious Diseases, Tokyo
10. National Institute of Infectious Diseases, Tokyo