1. State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, P.R. China.
2. State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, P.R. China.
3. Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, P.R. China.
4. Department of Preventive Veterinary Medicine, College of Life Sciences, Changchun Sci-Tech University, Shuangyang, P.R. China.
5. General Station for Surveillance of Wildlife-borne Infectious Diseases, State Forestry and Grassland Administration, Shenyang, P.R. China.
6. Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, P.R. China.
7. Key Laboratory of Veterinary Public Health of Higher Education of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P.R. China.