1. Endemic Medicine and Hepatology Department, Faculty of Medicine, Cairo University, Giza, Egypt
2. Hepatology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
3. Infectious Disease Department, National Hepatology and Tropical Medicine Research Institute, Cairo, Egypt
4. Kasr Alainy Hiv and Viral Hepatitis Fighting Group Cairo Egypt
5. Medical Research Division, National Research Center, Cairo, Egypt
6. Tropical Medicine Department, Embaba Fever Hospital, Cairo, Egypt