1. Division of Rheumatology, Sanliurfa Education and Research Hospital, 63100 Sanliurfa, Turkey
2. Department of Medical Biology, Ibni Sina Hospital, Ankara University School of Medicine, Ankara, Turkey
3. Department of Internal Medicine, Rheumatology, Ibni Sina Hospital, Ankara University School of Medicine, Ankara, Turkey
4. Division of Rheumatology, Atatürk Education and Research Hospital, Ankara, Turkey