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wilson et al. sputum acpa or rf assoc ra development in serum acpa+ individuals. x4 more likely - 46% vs 12%. #acr22 abstr#0533 
Rheumatologist @stjamesdublin , Associate Professor @tcddublin , Acute Medicine, Vasculitis, ILD, Retired @Emeunet Executive Committee member, @rheum_covid CASC