1. Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
2. Microbiology and Immunology Department, Faculty of Pharmacy, Sphinx University, Assiut, Egypt
3. Department of Tropical Medicine and Gastroenterology, Faculty of Medicine, Assiut University, Assiut, Egypt
4. Department of Internal Medicine and Hematology Unit, Assiut University Hospitals, Assiut University, Assiut, Egypt
5. Microbiology and Immunology Department, Faculty of Pharmacy, Assiut University, Assiut Egypt
6. Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, Minia, Egypt
7. Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Egypt
8. Department of Clinical Pathology, Faculty of Medicine, Assiut University, Egypt
9. Department of Clinical Pathology, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
10. Department of Clinical Pathology, Faculty of Medicine, Sohag University, Sohag, Egypt
11. Department of Pathology, School of Medicine, University of California, San Diego, La Jolla, California, USA