1. Histology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
2. Department of Biomedical Sciences, Faculty of Medicine, King Faisal University, Alhasa, Saudi Arabia
3. Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
4. Department of Anatomy and Embryology, Faculty of Medicine, Beni-Suef University, Beni Suef, Egypt
5. Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Beni-Suef University, Beni Suef, Egypt
6. Department of Zoology and Entomology, Faculty of Science, Assiut University, Assiut, Egypt