RT Journal Article SR Electronic T1 Heberden Society JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 515 OP 529 DO 10.1136/ard.40.5.515 VO 40 IS 5 YR 1981 UL http://ard.bmj.com/content/40/5/515.abstract AB