1. Department of Otolaryngology, Menofiya University Faculty of Medicine, Shebein Elkom, Egypt.
2. Department of Pathology, Menofiya University Faculty of Medicine, Shebein Elkom, Egypt.
3. Department of Clinical Pathology, Menofiya University Faculty of Medicine, Shebein Elkom, Egypt.
4. Department of Clinical Pharmacy, Faculty of Pharmacy, Modern Sciences and Arts University, October City, Egypt.