RT Journal Article SR Electronic T1 Empire Rheumatism Council JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 151 OP 151 DO 10.1136/ard.12.2.151 VO 12 IS 2 YR 1953 UL http://ard.bmj.com/content/12/2/151.abstract AB