RT Journal Article SR Electronic T1 The ANCA test: its clinical relevance. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 741 OP 742 DO 10.1136/ard.49.10.741 VO 49 IS 10 A1 G Ramírez A1 M A Khamashta A1 G R Hughes YR 1990 UL http://ard.bmj.com/content/49/10/741.abstract AB