PT - JOURNAL ARTICLE ED - , TI - Heberden Society AID - 10.1136/ard.40.5.515 DP - 1981 Oct 01 TA - Annals of the Rheumatic Diseases PG - 515--529 VI - 40 IP - 5 4099 - http://ard.bmj.com/content/40/5/515.short 4100 - http://ard.bmj.com/content/40/5/515.full SO - Ann Rheum Dis1981 Oct 01; 40