RT Journal Article SR Electronic T1 Pretreatment serum levels of anti-cyclic citrullinated peptide antibodies are associated with the response to methotrexate in recent-onset arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1194 OP 1195 DO 10.1136/ard.2008.088070 VO 67 IS 8 A1 K Visser A1 K N Verpoort A1 H van Dongen A1 S M van der Kooij A1 C F Allaart A1 R E M Toes A1 T W J Huizinga A1 A H M van der Helm-van Mil YR 2008 UL http://ard.bmj.com/content/67/8/1194.abstract AB