1. Department of Gastroenterology & Hepatology and Infectious Diseases Department Al‐Azhar University Cairo Egypt
2. Tropical Medicine Department Faculty of Medicine Port Said University Port Said Egypt
3. Egyptian Liver Research Institute and Hospital (ELRIAH) Sherbin El Mansoura Egypt
4. Hematology Section Clinical Pathology Department Faculty of Medicine Mansoura University Egypt
5. Tropical Medicine and Gastroenterology Department Faculty of Medicine Assiut University Assiut Egypt
6. Hepatology and Gastroenterology Unit Internal Medicine Department Faculty of Medicine Mansoura University Mansoura Egypt