1. Microbiology Department, Faculty of Pharmacy, Minia University, Minia, Egypt.
2. Department of General Surgery, Faculty of Medicine, Minia University, Minia, Egypt.
3. Department of Biochemistry, Faculty of Medicine, Minia University, Minia, Egypt.
4. Department of Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, Egypt.