1. State Key Laboratory of Veterinary Etiological Biology; Lanzhou Veterinary Research Institute; Chinese Academy of Agricultural Sciences; Lanzhou Gansu Province China
2. College of Animal Science and Technology; Jilin Agricultural University; Changchun Jilin Province China
3. Weihai Wendeng Central Hospital; Weihai; Shandong Province China
4. Affilliated Hospital of Medical College; Qingdao University; Qingdao Shandong Province China