Department of Gastroenterology, Dışkapı Yıldırım Beyazıt Education and Research Hospital, Ankara, Turkey
2.Departments of Internal Medicine, Hacettepe University, School of Medicine, Ankara
3.Departments of Rheumatology, Hacettepe University, School of Medicine, Ankara
4.Departments of Internal Medicine, Tokat Gaziosmanpaşa University School of Medicine, Tokat
5.Departments of Internal Medicine, Rheumatology, Hacettepe University, School of Medicine, Ankara