1. Fırat University Faculty of Medicine, Department of Rheumatology, Elazığ, Turkey

2. Dr. Ersin Arslan Training and Research Hospital, Clinic of Rheumatology, Gaziantep, Turkey

3. University of Health Sciences Turkey, İstanbul Sultan 2. Abdülhamid Han Training and Research Hospital, Clinic of Rheumatology, İstanbul, Turkey

4. Fırat University Faculty of Medicine, Department of Biochemistry, Elazığ, Turkey