title: Classification criteria for psoriatic arthritis and ankylosing spondylitis/axial spondyloarthritis.
authors.affiliation: Department of Medicine, Charité University Medicine, Campus Benjamin Franklin, Berlin, Germany. martin.rudwaleit@charite.de
authors.forename: Martin
authors.initials: M
authors.lastname: Rudwaleit
authors.forename: William J
authors.initials: WJ
authors.lastname: Taylor
mesh_terms: D015535:Arthritis, Psoriatic / Q000145:classification* / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D011859:Radiography; D058566:Sacroiliitis / Q000000981:diagnostic imaging*; D013167:Spondylitis, Ankylosing / Q000145:classification* / Q000175:diagnosis*