Components of treatment delay in rheumatoid arthritis differ according to autoantibody status: validation of a single-centre observation using national audit data.
A tendency for ACPA + /RF + RA patients to be younger achieved marginal significance (P = 0.05).
also in 5,069 other papers
Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.