1. Al-Jalaa Teaching Hospital, Department of General Surgery, Benghazi University Faculty of Medicine, Benghazi, Libya

2. Department of Surgery, Libyan International Medical University, Benghazi, Libya

3. Benghazi Medical Center, Department of Diagnostic Radiology, Benghazi University Faculty of Medicine, Benghazi, Libya

4. Department of Family and Community Medicine, Benghazi University Faculty of Medicine, Benghazi, Libya

5. Ajdabiya Teaching Hospital, Department of General Surgery, Ajdabiya University Faculty of Medicine, Ajdabiya, Libya