RT Journal Article SR Electronic T1 Etanercept is effective in patients with rheumatoid arthritis with no response to infliximab therapy JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 896 OP 896 VO 63 IS 7 A1 J A Gómez-Puerta A1 R Sanmartí A1 J R Rodríguez-Cros A1 J D Cañete YR 2004 UL http://ard.bmj.com/content/63/7/896.abstract AB