[1] Gazi Univ, Fac Med, Dept Internal Med, Div Rheumatol, Ankara, Turkiye
[2] Hacettepe Univ, Fac Med, Dept Internal Med, Ankara, Turkiye
[3] Firat Univ, Fac Med, Dept Internal Med, Div Rheumatol, Elazig, Turkiye
[4] Etlik City Hosp, Dept Rheumatol, Ankara, Turkiye
[5] Istanbul Univ, Fac Med, Dept Internal Med, Div Rheumatol, Istanbul, Turkiye
[6] Gazi Univ Hosp, Dept Internal Med, Ankara, Turkiye
[7] Univ Hlth Sci, Gulhane Training & Res Hosp, Dept Rheumatol, Ankara, Turkiye
[8] Yildirim Beyazit Univ, Dept Internal Med, Ankara, Turkiye
[9] Hlth Sci Univ, Ankara City Hosp, Dept Rheumatol, Ankara, Turkiye
[10] Hacettepe Univ, Fac Med, Dept Internal Med, Div Rheumatol, Ankara, Turkiye
[11] NHGRI, Inflammatory Dis Sect, Bethesda, MD 20892 USA