Rheumatoid factor and anti-CCP do not predict progressive joint damage in patients with early rheumatoid arthritis treated with prednisolone: a randomised study.
Hafström I, Engvall IL, Rönnelid J, Boonen A, van der Heijde D, Svensson B; BARFOT study group.BMJ Open. 2014 Jul 30;4(7):e005246. doi: 10.1136/bmjopen-2014-005246.PMID: 25079933