1. Department of Gastroenterology, Ankara Bilkent City Hospital, Üniversiteler Mah. 1604. Cd. No: 9, Çankaya, Ankara 06800, Turkey
2. Department of Gastroenterology, Ankara Bilkent City Hospital, Çankaya, Turkey
3. Department of Internal Medicine, Ankara Bilkent City Hospital, Çankaya, Turkey
4. Department of Radiology, Ankara Bilkent City Hospital, Çankaya, Turkey