1. Department of Avian and Rabbit Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
2. Department of Virology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
3. Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
4. Department of Biochemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia
5. Department of Veterinary Medicine, Faculty of Agriculture and Veterinary medicine, Thamar University, Dhamar, Yemen
6. Department of Clinical Sciences, College of Veterinary Medicine, King Faisal University, Al-Ahsa, Saudi Arabia