1. Avian Biologics Department, Kyoto Biken Laboratories, Inc.
2. Division 2, Second Research Department, The Chemo-Sero-Therapeutic Research Institute
3. Research Center for Biologicals, The Kitasato Institute
4. Research Department, Nippon Institute for Biological Science
5. Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University
6. Research Center for Zoonosis Control, Hokkaido University