[1] Istanbul Univ, Dept Paediat Rheumatol, Fac Med, Istanbul, Turkey
[2] Univ Hlth Sci, Umraniye Res & Training Hosp, Dept Paediat Rheumatol, Istanbul, Turkey
[3] Kocaeli Univ, Dept Paediat Rheumatol, Fac Med, Kocaeli, Turkey
[4] Zeynep Kamil Res & Training Hosp, Dept Paediat Rheumatol, Istanbul, Turkey
[5] Istanbul Medeniyet Univ, Goztepe Res & Training Hosp, Dept Paediat Rheumatol, Istanbul, Turkey
[6] Istanbul BakiRkoy Dr Sadi Konuk Res & Training Ho, Dept Paediat Rheumatol, Istanbul, Turkey
[7] Sanliurfa Res & Training Hosp, Dept Paediat Rheumatol, Sanliurfa, Turkey
[8] Univ Hlth Sci, Ankara Dr Sami Ulus Res & Training Hosp, Dept Paediat Rheumatol, Ankara, Turkey
[9] Adana City Res & Training Hosp, Dept Paediat Rheumatol, Adana, Turkey
[10] Bursa City Hosp, Dept Paediat Rheumatol, Bursa, Turkey
[11] Diyarbakir Childrens Hosp, Dept Paediat Rheumatol, Diyarbakir, Turkey