1. Laboratory of Animal Health, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fchu-shi, Tokyo 183-8509, Japan
2. Applied Veterinary Science, United Graduate School of Veterinary Science, Gifu University, 1-1, Yanagido, Gifu 501-1193, Japan
3. Bar-Ilan University, Begin-Sadat Center for Strategic Studies, Ramat Gan 5290002, Israel