1. Biochemistry Department, National Hepatology and Tropical Medicine, Cairo, Egypt
2. Hepatology, Gastroenterology and Infectious Diseases Department, Faculty of Medicine Banha University, Cairo, Egypt
3. Hepatology, Gastroenterology and Infectious Diseases Department, Faculty of Medicine Portsaid University, Cairo, Egypt
4. Gastroenterology and Hepatology Department, Kobry el Kobba Military Hospital, Cairo, Egypt
5. Clinical Pathology Department, National Institute of Diabetics and Endocrinology, Egypt
6. Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
7. Microbiology Department, Faculty of Pharmacy, Egyptian Russian University, Badr, Egypt
8. Tropical Medicine Department, Tanta University, Tanta, Egypt