1. Department of Veterinary Research and Biotechnology, Razi Vaccine & Serum Research Institute, Agricultural Research, Education and Extension Organization, Mashhad, Iran
2. Veterinary Diagnostic Laboratory, MAAD Professional Poultry Hospital, Mashhad, Iran
3. Division of Poultry Diseases, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran