1. Key Laboratory of Livestock Infectious Diseases, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, People’s Republic of China
2. Manzhouli International Travel Health Care Center, Manzhouli, Inner Mongolia, People’s Republic of China
3. The Sixth People's Hospital of Dandong City, Dandong, Liaoning, People’s Republic of China
4. Tongliao Centers for Disease Control and Prevention, Tongliao, Inner Mongolia, People’s Republic of China