RT Journal Article SR Electronic T1 Corrections JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1264 OP 1264 DO 10.1136/annrheumdis-2011-200092corr1 VO 71 IS 7 YR 2012 UL http://ard.bmj.com/content/71/7/1264.1.abstract AB