1. Department of Farm Resources and Production Medicine and Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand.
2. Department of Veterinary Public Health, Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand.
3. Kamphaeng Saen Veterinary Diagnostic Center, and Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand.
4. Department of Pathology, Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand.