1. State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, People’s Republic of China
2. Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, People’s Republic of China
3. Guizhou Institute of Animal Husbandry and Veterinary Science, Guizhou, People’s Republic of China