Radwan Kassir1, Pierre Blanc2, Olivier TIffet3. 1. Department of Bariatric Surgery, CHU Hospital, Jean Monnet University, Avenue Albert Raimond, 42270, Saint-Etienne, France. radwankassir42@hotmail.fr. 2. Department of Digestive Surgery, Clinique Chirurgicale Mutualiste de Saint-Etienne, Saint-Etienne, France. 3. Department of Bariatric Surgery, CHU Hospital, Jean Monnet University, Avenue Albert Raimond, 42270, Saint-Etienne, France.