1. Department of Veterinary Pathology, Faculty of Veterinary Medicine, Kafr El-Sheikh University, Kafr El-Sheikh, Egypt
2. Department of Veterinary Pathology and Microbiology, Faculty of Applied Biological Science, Gifu University, Gifu, Japan
3. Department of Veterinary Anatomy, College of Veterinary Medicine, Seoul National University, Seoul, Korea
4. Department of Veterinary Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt.