| - Follow-up of a cohort of patients with recent-onset RF/ACPA-positive polyarticular JIA, with annual CR for 10 years to identify predictors of structural joint damage - Comparison of radiographic disease progression in oligoarticular JIA in patients with and without antinuclear antibodies - Comparison of joint MRI, US, and CR as tools for detecting structural damage in patients younger than 5 years of age - Evaluation of joint damage at the transition from paediatric to adult healthcare in each JIA subtype - Improvement of the definition of juvenile psoriatic arthritis, to obtain homogeneous populations for studies of imaging techniques |
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