title: Disease measurement--enthesitis, skin, nails, spine and dactylitis.
authors.affiliation: Academic Section of Musculoskeletal Disease, Leeds Institute of Molecular Medicine, University of Leeds, Chapel Allerton Hospital, Chapeltown Road, Leeds, LS7 4SA, UK.
authors.forename: Laura C
authors.initials: LC
authors.lastname: Coates
authors.forename: Philip S
authors.initials: PS
authors.lastname: Helliwell
mesh_terms: D015535:Arthritis, Psoriatic / Q000150:complications*; D006801:Humans; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000150:complications*