[1] Kasralainy Sch Med, Gen Surg Dept, Giza, Egypt
[2] Cairo Univ, Kasralainy Sch Med, Internal Med, Giza, Egypt
[3] Natl Hepatol & Trop Med Res Inst, Gastroenterol & Hepatol, Cairo, Egypt
[4] Salford Royal Hosp, Gen OesophagoGastr Surg, Manchester, England
[5] Univ Manchester, Div Canc Sci, Manchester, England
[6] Great Western Hosp, NHS Fdn Trust, Swindon, England
[7] Royal Free London Hosp, NHS, London, England
[8] Glangwill Gen Hosp, Carmarthen, Wales
[9] Wirral Univ Teaching Hosp, NHS, Wirral, England
[10] Menoufia Fac Med, Menoufia, Egypt
[11] United Lincolnshire NHS Trust, Gen Surg, Lincoln, England
[12] Univ Hosp Dorset NHS Fdn Trust, Poole, England
[13] Cumberland Infirm Hosp, North Cumbria Integrated Care NHS Fdn Trust, Carlisle, England
[14] Laparoscop & HBP Surg Natl Hepatol & Trop Med Res, Cairo, Egypt
[15] Cairo Univ, Kasralainy Sch Med, Gen Surg Dept, 46 Mawardy St, Cairo 111562, Egypt