RT Journal Article SR Electronic T1 AUTHORS' REPLY JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 896 OP 897 DO 10.1136/ard.52.12.896 VO 52 IS 12 A1 J C Piette A1 T Papo A1 Le Thi Huong Du A1 O Meyer YR 1993 UL http://ard.bmj.com/content/52/12/896.abstract AB