1. Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, The University of Tokyo
2. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Corporation
3. Laboratory of Veterinary Microbiology, Division of Veterinary Science, Graduate School of Agriculture and Biological Sciences, Osaka Prefecture University
4. Department of Microbiology, The University of Hong Kong, Queen Mary Hospital
5. Government Virus Unit, Department of Health
6. Department of Virology III, National Institute of Infectious Diseases
7. Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin