1. Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
2. Department of Clinical Sciences, Faculty of Veterinary Medicine, Karaj Branch, Islamic Azad University, Alborz, Iran
3. Razi Vaccine and Serum Research Institute, Agricultural Research and Extension Organization, Tehran, Iran
4. Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
5. Iranian Veterinary Organization, Tehran, Iran