1. Department of General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
2. General Surgery Department, Homerton University Hospital, London, UK
3. Department of Surgical Science, University of Cagliari, Cagliari, Italy
4. Division of General Surgery, Department of Biomedical Science for Health, I.R.C.C.S. Ospedale Galeazzi-Sant’Ambrogio, University of Milan, Milan, Italy
5. Department of Surgery, National Medical University, Kharkiv, Ukraine
6. General Surgery Department, Faculty of Medicine, Al-Azher University, Egypt
7. General Surgery Department, Mataryia Teaching Hospital, Egypt
8. Department of Hepato-Bilio-Pancreatic (HBP) Surgery, National Hepatology and Tropical Medicine Research Institute, Cairo, Egypt
9. General Surgery Department, Faculty of Medicine, Merit University, Sohag, Egypt