1. Clinical and Chemical Pathology Department, Faculty of Medicine, Cairo University, Cairo, Egypt;
2. Department of Endemic Medicine and Hepatogastroenterology, Faculty of Medicine, Cairo University, Cairo, Egypt;
3. Department of Microbiology and Immunology, Faculty of Pharmacy, Port Said University, Port Said, Egypt;
4. Department of Tropical Medicine, Ain Shams University, Cairo, Egypt;
5. Department of Biochemistry, Faculty of Pharmacy, Ahram Canadian University, Cairo, Egypt