RT Journal Article SR Electronic T1 Anti-tumour necrosis factor α therapy: can we afford it? JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 969 OP 970 DO 10.1136/ard.2005.037564 VO 64 IS 7 A1 D P M Symmons YR 2005 UL http://ard.bmj.com/content/64/7/969.abstract AB