title: What is the most important outcome parameter in ankylosing spondylitis?
authors.forename: J
authors.initials: J
authors.lastname: Braun
authors.forename: J
authors.initials: J
authors.lastname: Sieper
mesh_terms: D006801:Humans; D011788:Quality of Life; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000628:therapy*; D016896:Treatment Outcome