[1] Marmara Univ, Sch Med, Dept Internal Med, Div Rheumatol, Istanbul, Turkey
[2] Sancaktepe Prof Dr Ilhan Varank Training & Res Ho, Rheumatol, Istanbul, Turkey
[3] Ege Univ, Dept Internal Med, Div Rheumatol, Sch Med, Izmir, Turkey
[4] Kocaeli Univ, Dept Internal Med, Div Rheumatol, Sch Med, Istanbul, Turkey
[5] Istanbul Univ, Dept Internal Med Rheumatol, Istanbul Fac Med, Istanbul, Turkey
[6] Trakya Univ, Dept Internal Med, Div Rheumatol, Sch Med, Edirne, Turkey
[7] Koc Univ, Dept Internal Med, Div Rheumatol, Sch Med, Istanbul, Turkey
[8] Dokuz Eylul Univ, Dept Internal Med, Div Rheumatol, Sch Med, Izmir, Turkey
[9] Osmangazi Univ, Dept Internal Med, Div Rheumatol, Sch Med, Eskisehir, Turkey
[10] Ankara City Hosp, Rheumatol, Minist Hlth, Ankara, Turkey
[11] Katip Celebi Univ, Dept Internal Med, Div Rheumatol, Sch Med, Izmir, Turkey
[12] Marmara Univ, Dept Publ Hlth, Fac Med, Istanbul, Turkey