1. Department of Food Hygiene and Public Heath, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
2. Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
3. Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
4. Graduated from the School of Veterinary Medicine, Shiraz University, Shiraz, Iran