RT Journal Article SR Electronic T1 Author's reply JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 489 OP 489 DO 10.1136/ard.55.7.489-b VO 55 IS 7 A1 Kerstin Eberhardt YR 1996 UL http://ard.bmj.com/content/55/7/489.2.abstract AB