1. Department of Microbiology and Immunology, Faculty of Pharmacy, October University for Modern Sciences and Arts, 6th of October, Egypt.
2. Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
3. Department of Clinical Pathology, National Cancer Institute, Cairo University, Cairo, Egypt.
4. Department of Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
5. Department of Microbiology and Immunology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt.