1. Animal Disease Diagnostic Center; National Veterinary Research and Quarantine Services; 480 Anyang 6-dong, Manan-gu Anyang 430-824 Republic of Korea
2. Epidemiology Division; National Veterinary Research and Quarantine Services; 480 Anyang 6-dong, Manan-gu Anyang 430-824 Republic of Korea
3. National Veterinary Research and Quarantine Services; 480 Anyang 6-dong, Manan-gu Anyang 430-824 Republic of Korea