title: Age at symptom onset in ankylosing spondylitis: is there a gender difference?
authors.affiliation: Department of Rheumatology, University Hospital, Zurich, Switzerland.
authors.forename: Adrian
authors.initials: A
authors.lastname: Ciurea
authors.affiliation: Swiss Clinical Quality Management Foundation, Zurich, Switzerland.
authors.forename: Almut
authors.initials: A
authors.lastname: Scherer
authors.affiliation: King Christian 10th Hospital for Rheumatic Diseases, Gråsten, Denmark.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Weber
authors.affiliation: University of Zurich, Zurich, Switzerland.
authors.forename: Regula
authors.initials: R
authors.lastname: Neuenschwander
authors.affiliation: Department of Rheumatology, Bethesda Hospital, Basel, Switzerland.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Tamborrini
authors.affiliation: Praxis Rheuma-Basel, Basel, Switzerland.
authors.forename: Pascale
authors.initials: P
authors.lastname: Exer
authors.affiliation: Department of Rheumatology and Rehabilitation, Bürgerspital, Solothurn, Switzerland.
authors.forename: Jürg
authors.initials: J
authors.lastname: Bernhard
authors.affiliation: Department of Rheumatology and Clinical Immunology, Inselspital, Bern, Switzerland.
authors.forename: Peter M
authors.initials: PM
authors.lastname: Villiger
authors.affiliation: King Christian 10th Hospital for Rheumatic Diseases, Gråsten, Denmark.
authors.forename: Rudolf
authors.initials: R
authors.lastname: Kissling
authors.affiliation: Department of Rheumatology, University Hospital, Zurich, Switzerland.
authors.forename: Beat A
authors.initials: BA
authors.lastname: Michel
authors.affiliation: Swiss Clinical Quality Management Foundation, Zurich, Switzerland.
authors.forename: Daniel
authors.initials: D
authors.lastname: Stekhoven
mesh_terms: D000293:Adolescent; D000328:Adult; D017668:Age of Onset; D005260:Female; D015796:HLA-B27 Antigen / Q000032:analysis; D006801:Humans; D008297:Male; D012727:Sex Characteristics; D013167:Spondylitis, Ankylosing / Q000453:epidemiology*; D013557:Switzerland / Q000453:epidemiology; D055815:Young Adult
chemical_list: D015796:HLA-B27 Antigen
keywords: Ankylosing Spondylitis; Epidemiology; Spondyloarthritis