1. Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases
2. Department of Chemistry, Faculty of Science, Tokyo University of Science
3. Department of Cell Biology and Neurosciences, Juntendo University Graduate School of Medicine
4. Department of Infectious Diseases, Hamamatsu University School of Medicine
5. Gyotoku General Hospital
6. Department of Virology II, National Institute of Infectious Diseases