1. Medical Microbiology and Immunology Dept., Faculty of Medicine, Minia University, Minia, Egypt
2. Clinical Pathology Dept., Faculty of Medicine, Fayoum University, Fayoum, Egypt
3. Internal Medicine Dept., Faculty of Medicine, Fayoum University, Fayoum, Egypt
4. Tropical Medicine Dept., Faculty of Medicine, Fayoum University, Fayoum, Egypt
5. Nephrology Dept., Thumbay Hospital, Gulf University, Ajmon, UAE
6. Tropical Medicine Dept., Faculty of Medicine, Minia University, Minia, Egypt
7. Medical. Microbiology and Immunology Dept., Faculty of Medicine, Fayoum University, Fayoum, Egypt