RT Journal Article SR Electronic T1 Radioactive yttrium in the treatment of rheumatoid knee effusions. Preliminary evaluation. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 180 OP 182 DO 10.1136/ard.30.2.180 VO 30 IS 2 A1 J F Bridgman A1 F Bruckner A1 N M Bleehen YR 1971 UL http://ard.bmj.com/content/30/2/180.abstract AB