PT - JOURNAL ARTICLE ED - , TI - Abstracts DP - 2007 Mar 01 TA - Annals of the Rheumatic Diseases PG - A6--A69 VI - 66 IP - suppl 1 4099 - http://ard.bmj.com/content/66/suppl_1/A6.short 4100 - http://ard.bmj.com/content/66/suppl_1/A6.full SO - Ann Rheum Dis2007 Mar 01; 66