Department of Gastroenterology, Atatürk Training and Research Hospital, Ankara
2.Department of Gastroenterology, Sivas State Hospital, Sivas
3.Department of Gastroenterology, Başkent University Faculty of Medicine, Ankara, Turkey
4.Departments of Gastroenterology and Hematology, Türkiye Yüksek İhtisas Hospital, Ankara
5.Departments of Gastroenterology and Hematology, Hacettepe University, School of Medicine, Ankara
6.Department of Gastroenterology, Yıldırım Beyazıt University, Faculty of Medicine, Ankara, Turkey
7.Department of Internal Medicine, Hematology and Pathology, Hacettepe University School of Medicine, Ankara