[1] Tehran University,Department of Clinical Science, Faculty of Veterinary Medicine
[2] Tehran University,Department of Pathology, Faculty of Veterinary Medicine
[3] Ilam University,Faculty of Para Veterinary Medicine
[4] Tehran University,Graduate, Faculty of Veterinary Medicine
[5] University of Shahekord,Food Hygiene Department
[6] Razi University,Faculty of Veterinary Medicine
[7] Shahed University,Department of Pathology, Faculty of Medicine Science