The prevalence of ankylosing spondylitis.
D000367:Age Factors; D001315:Australia; D003625:Data Collection; D004196:Disease Outbreaks; D004777:Environment; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D013167:Spondylitis, Ankylosing / Q000453:epidemiology* / Q000235:genetics; D014481:United States