title: The Difficult Task of Assessing Psoriatic Arthritis.
authors.affiliation: cauli@medicina.unica.it.
authors.forename: Alberto
authors.initials: A
authors.lastname: Cauli
authors.affiliation: Rheumatology Unit, Department of Medical Sciences, Policlinico of the University of Cagliari, Monserrato, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Piga
mesh_terms: D015535:Arthritis, Psoriatic; D006801:Humans; D014937:Work