September 7, 2012 — Elevated rheumatoid factor (RF) levels in healthy patients may be a strong predictor of future rheumatoid arthritis (RA), according to data from a prospective cohort study ...
Children with systemic juvenile idiopathic arthritis (sJIA; Still disease) and those with rheumatoid factor (RF)-positive polyarthritis exhibiting high disease activity had higher serum ferritin ...
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