1. Department of Farm Resources and Production Medicine, Faculty of Veterinary Medicine, Kasetsart University, Kamphaeng Saen, Nakhon Pathom, Thailand
2. Department of Infectious Diseases and Veterinary Public Health, Faculty of Animal Sciences and Veterinary Medicine, Nonglam University, HCMC, Vietnam
3. Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, Pathum Wan, Bangkok, Thailand