RT Journal Article SR Electronic T1 Sheep Cell Agglutination Test in Chronic Interstitial Pulmonary Fibrosis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 246 OP 256 DO 10.1136/ard.24.3.246 VO 24 IS 3 A1 Richard Ward A1 Randal Stalker YR 1965 UL http://ard.bmj.com/content/24/3/246.abstract AB