1. Surgical Department, Medical School, National Institute of Oncology, University Mohammed Vth Souissi, Rabat, Rabat, Morocco;
2. Department of General Surgery, Medical School, University Mohammed Vth Souissi, Rabat, Rabat, Morocco;
3. Gastroenterology Unit, Medical School, National Institute of Oncology, University Mohammed Vth Souissi, Rabat, Rabat, Morocco