1. Key Laboratory of Animal Epidemiology and Zoonosis Ministry of Agriculture National Animal Transmissible Spongiform Encephalopathy Laboratory College of Veterinary Medicine China Agricultural University Beijing China
2. College of Veterinary Medicine China Agricultural University Beijing China
3. College of Veterinary Sciences The University of Agriculture Peshawar Peshawar Pakistan
4. Department of Pathobiology Faculty of Veterinary and Animal Sciences University of Poonch Rawalakot Pakistan
5. Animal Husbandry and Veterinary College Southwest University for Nationalities Cheng Du China