RT Journal Article SR Electronic T1 Towards international guidelines for the management of psoriatic arthritis. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1228 OP 1230 VO 33 IS 7 A1 Dafna D Gladman A1 Philip J Mease YR 2006 UL http://www.jrheum.org/content/33/7/1228.abstract AB