1. Endemic Medicine Department, Faculty of Medicine, Helwan University, Cairo, Egypt
2. Department of Internal Medicine, Al-Azhar University, Cairo, Egypt
3. Endemic Medicine and Hepato-Gastroenterology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
4. Tropical Medicine Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
5. Internal Medicine Department, Faculty of Medicine, Cairo University, Cairo, Egypt
6. Tropical Medicine and Gastroenterology Department, Faculty of Medicine, Aswan University, Aswan, Egypt
7. New Cairo Viral Hepatitis Treatment Unit, Cairo, Egypt
8. Epidemiology and Preventive Medicine Department, National Liver Institute, Menoufia University, Shebin Elkom, Egypt
9. National Hepatology and Tropical Medicine Research Institute, Cairo, Egypt
10. Internal Medicine Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt