1. Endemic Medicine and Hepato-gastroenterology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
2. Tropical Medicine and Infectious Diseases Department, Faculty of Medicine, Tanta University, Tanta, Gharbia, Egypt
3. Clinical Pathology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
4. Tropical Medicine Department, National Hepatology & Tropical Medicine Research Institute, Cairo, Egypt
5. Endemic Medicine and Hepato-Gastroenterology Department, Badr University in Cairo, Cairo, Egypt