RT Journal Article SR Electronic T1 Discussion: Clinical features, epidemiology, classification criteria, and quality of life in psoriasis and psoriatic arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP ii24 OP ii25 DO 10.1136/ard.2004.030767 VO 64 IS suppl 2 A1 D D Gladman YR 2005 UL http://ard.bmj.com/content/64/suppl_2/ii24.abstract AB