1. Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.
2. Division of Veterinary Sciences, Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.
3. Department of Infection Diseases Bacteriology, Hokkaido Institute of Public Health, Sapporo, Japan.
4. General of Center for Research Administration and Collaboration, Tokushima University, Tokushima, Japan.