1. Gastroenterology Department, Charles Nicolle hospital, Tunis, 1006, Tunisia
2. Histopathology Department, Salah Azaiez Institute, Tunis, 1007, Tunisia
3. Radiology Department, El Amen private hospital, Nabeul, 8000, Tunisia
4. Gastroenterology Department, El Amen private hospital, Nabeul, 8000, Tunisia