1. Laboratory of Zoonotic Diseases, School of Veterinary Medicine Rakuno Gakuen University Ebetsu Hokkaido Japan
2. Laboratory of Anthrozoology, School of Veterinary Medicine Rakuno Gakuen University Ebetsu Hokkaido Japan
3. Laboratory of Veterinary Hygiene, Graduate School of Veterinary Medicine Hokkaido University Sapporo Hokkaido Japan