1. General Surgery Department Kasralainy School of Medicine Cairo University Cairo Egypt
2. Internal Medicine Department Kasralainy School of Medicine Cairo University Cairo Egypt
3. General Surgery Department National Hepatology and Tropical Medicine Research Institute Cairo Egypt
4. General Surgery Department United Lincolnshire NHS Trust Lincoln UK
5. General Surgery Department Great Western Hospital Swindon UK
6. Department of General Surgery Faculty of Medicine Al‐Azhar University Assuit Branch Assuit Egypt
7. Anesthesia and Pain Management Department Kasralainy School of Medicine Cairo University Cairo Egypt