[1] Leiden Univ Med Ctr LUMC, Rheumatol, Leiden, Netherlands
[2] Leiden Univ Med Ctr LUMC, Willem Alexander Childrens Hosp, Div Pediat Rheumatol, Pediat, Leiden, Netherlands
[3] Univ Amsterdam, Emma Childrens Hosp, Pediat Immunol Rheumatol & Infect Dis, Med Ctr, Amsterdam, Netherlands
[4] Erasmus MC, Pediat Pediat Rheumatol, Sophia Childrens Hosp, Rotterdam, Netherlands
[5] Univ Amsterdam, Emma Childrens Hosp, Pediat, Med Ctr, Amsterdam, Netherlands
[6] Amsterdam Rheumatol & Immunol Ctr Reade, Pediat rheumatol, Amsterdam, Netherlands
[7] Juliana Childrens Hosp, HagaZiekenhuis, Pediat, The Hague, Netherlands