Department of Gastroenterology, Van Region Training and Research Hospital, Van, Turkey
2.Department of Rheumatology, İstanbul University, Cerrahpaşa School of Medicine, İstanbul
3.Department of Gastroenterology, İstanbul Universty Cerrahpaşa Medicine Faculty, İstanbul, Turkey
4.Department of Gastroenterology, Erzurum Training and Research Hospital, Erzurum
5.Departments of Internal Medicine, Surgery and Pathology of Cerrahpaşa Medical Faculty of the University of İstanbul