1. Department of Public Health Science, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
2. College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
3. Division of Emerging Infectious Diseases, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju-si, Republic of Korea
4. College of Veterinary Medicine, Chungbuk National University, Cheongju-si, Republic of Korea