RT Journal Article SR Electronic T1 Is there a need for new agents with novel mechanisms of action in psoriatic arthritis? JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 951 OP 953 DO 10.1136/annrheumdis-2013-204934 VO 73 IS 6 A1 Carl Orr A1 Douglas James Veale YR 2014 UL http://ard.bmj.com/content/73/6/951.abstract AB