[1] Hacettepe Univ, Fac Med, Dept Pediat, Div Rheumatol, Ankara, Turkey
[2] Hacettepe Univ, Fac Med, Dept Med Genet, Ankara, Turkey
[3] Akdeniz Univ, Fac Med, Dept Pediat, Div Nephrol Rheumatol, Antalya, Turkey
[4] Kocaeli Univ, Fac Med, Div Rheumatol, Dept Pediat, Kocaeli, Turkey
[5] Erciyes Univ, Fac Med, Pediat Rheumatol, Kayseri, Turkey
[6] Dokuz Eylul Univ, Izmir, Turkey