RT Journal Article SR Electronic T1 Correction JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP e35 OP e35 DO 10.1136/annrheumdis-2012-eular.1366corr1 VO 76 IS 9 YR 2017 UL http://ard.bmj.com/content/76/9/e35.1.abstract AB