1. Institute of Equine Sciences, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
2. Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
3. Chinese Academy of Inspection and Quarantine, Beijing, China
4. Shenyang Institute of Animal Husbandry and Veterinary Science, Shenyang, China
5. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China