title: Assessment of ankylosing spondylitis.
authors.forename: K
authors.initials: K
authors.lastname: Zukovskis
authors.forename: M J
authors.initials: MJ
authors.lastname: Davis
authors.forename: P T
authors.initials: PT
authors.lastname: Dawes
authors.forename: P
authors.initials: P
authors.lastname: Jones
mesh_terms: D006801:Humans; D008137:Longitudinal Studies; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000503:physiopathology*