1. Department of Gastroenterology, Mohamed Taher Maamouri Hospital, Nabeul, Tunisia
2. Department of Cytology, Mohamed Taher Maamouri Hospital, Nabeul, Tunisia
3. Department of Oncology, Mohamed Taher Maamouri Hospital, Nabeul, Tunisia
4. Department of Surgery, Mohamed Taher Maamouri Hospital, Nabeul, Tunisia