Childhood-onset versus adult-onset Sjögren Syndrome: Clinical phenotype, disease activity, and predictors of organ damage in a national multicenter cohort.
OBJECTIVES To compare the clinical, immunological, and diagnostic characteristics of childhood-onset (coSS) versus adult-onset Sjögren syndrome (aoSS), assess disease activity and damage accrual, and identify independent predictors of organ damage. METHODS This national, multicenter retrospective cohort included 197...