Additional file 2: of Clinical features of children with enthesitis-related juvenile idiopathic arthritis / juvenile spondyloarthritis followed in a French tertiary care pediatric rheumatology centreMaxime Goirand, Sylvain Breton, FrĂŠdĂŠric Chevallier, Ngoc-Phoi Duong, Florence Uettwiller, Isabelle Melki, Richard Mouy, Carine Wouters, Brigitte Bader-Meunier, Chantal Job-Deslandre & Pierre Quartier
Figure S1. Evolution of the prevalence of inflammatory back pain. Inflammatory back pain was defined as proposed by the ASAS in 2009 . Insidious onset. Improvement with exercise. No improvement with rest. Pain at night. (DOCX 63Â kb)
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