1. Avian Disease Division
2. Veterinary Epidemiology DivisionNational Veterinary Research and Quarantine Service480, Anyang CityGyeonggi‐do430‐824Republic of Korea
3. Gyeonggi Livestock Promotion Research Institute746‐15, Suwon CityGyeonggi‐do441‐460Republic of Korea
4. Veterinary Medicine DepartmentCollege of Veterinary MedicineChonnam National University500Kwangju500‐757Republic of Korea