title: Psoriatic arthritis: a unified concept twenty years on.
authors.affiliation: The University of Leeds, UK.
authors.forename: D
authors.initials: D
authors.lastname: McGonagle
authors.forename: P G
authors.initials: PG
authors.lastname: Conaghan
authors.forename: P
authors.initials: P
authors.lastname: Emery
mesh_terms: D015535:Arthritis, Psoriatic / Q000145:classification / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D052256:Tendinopathy / Q000150:complications / Q000503:physiopathology; D013710:Tendons / Q000503:physiopathology