1. From the Department of Radiology, Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey

2. Departments of Gastroenterology, Bakırköy Training and Research Hospital, İstanbul, Turkey

3. Departments of Internal Medicine, Bakırköy Training and Research Hospital, İstanbul, Turkey

4. Radiology Clinic, Bakırköy Training and Research Hospital, İstanbul, Turkey

5. Department of Gastroenterology, Kartal Training and Research Hospital, İstanbul, Turkey

6. Departments of Gastroenterology, Haseki Training and Research Hospital, İstanbul, Turkey