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 1880 OP 1880 DO 10.1136/ard.2010.138693corr1 VO 70 IS 10 YR 2011 UL http://ard.bmj.com/content/70/10/1880.abstract AB