Department of General Surgery, Keçiören Training and Research Hospital, , Ankara, Turkey
2.Department of Internal Medicine, Mevlana (Rumi) University Hospital, Konya, Turkey
3.Department of Gastroenterology, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
4.Department of Pathology, Keçiören Training and Research Hospital, Ankara, Turkey