1. Department of Preventive Veterinary Medicine, College of Life Sciences, Changchun Sci-Tech University, Changchun, Jilin, China.
2. Department of Preventive Veterinary Medicine, School of Pharmacy, The Yancheng Teachers University, Yancheng, Jiangsu, China.
3. Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China.
4. Department of Preventive Veterinary Medicine, Center for Animal Disease Prevention and Control, Baicheng, Jilin, China.
5. Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong, China.
6. Department of Preventive Veterinary Medicine, Inner Mongolia Shunwang Cattle Co., Ltd., Tongliao, Inner Mongolia Autonomous Region, China.