RT Journal Article SR Electronic T1 Methotrexate reduces immunogenicity in adalimumab treated rheumatoid arthritis patients in a dose dependent manner JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1914 OP 1915 DO 10.1136/annrheumdis-2012-201544 VO 71 IS 11 A1 Charlotte L Krieckaert A1 Michael T Nurmohamed A1 Gerrit Jan Wolbink YR 2012 UL http://ard.bmj.com/content/71/11/1914.abstract AB