1. Matsumoto Livestock Hygiene Service Center, 6931 Nishigawara, Shimauchi, Matsumoto, Nagano 390-0851, Japan
2. Ina Livestock Hygiene Service Center, 5764 Nishimachi, Ina, Nagano 396-0026, Japan
3. Laboratory of Food and Environmental Hygiene, Cooperative Department of Veterinary Medicine, Gifu University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan
4. Education and Research Center for Food Animal Health, Gifu University (GeFAH), 1-1 Yanagido, Gifu, Gifu 501-1193, Japan
5. The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan
6. Joint Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan