1. Egyptian Liver Research Institute and Hospital (ELRIAH) El‐Mansoura Egypt
2. Hepatology and Gastroenterology Unit Internal Medicine Department Faculty of Medicine Mansoura University Mansoura Egypt
3. Tropical Medicine Department Faculty of Medicine Mansoura University Mansoura Egypt
4. Tropical Medicine Department Faculty of Medicine Port Said University Port Said Egypt
5. Biostatistics and Cancer Epidemiology Department South Egypt Cancer Institute Assiut University Assuit Egypt
6. Internal Medicine Department Faculty of Medicine Minya University Minya Egypt