H. M. Salem
Egypt
Cairo University
Department of Poultry diseases, Faculty of Veterinary Medicine
E. A. Morsy
Egypt
Cairo University
Department of Poultry diseases, Faculty of Veterinary Medicine
E. I. Hassanen
Egypt
Department of Pathology, Faculty of Veterinary Medicine
Cairo University
A. A. Shehata
Egypt
University of Sadat City
Avian and Rabbit Diseases Department, Faculty of Veterinary Medicine