title: [Characteristics of the early stages of ankylosing spondyloarthritis].
mesh_terms: D000328:Adult; D006801:Humans; D013167:Spondylitis, Ankylosing / Q000175:diagnosis*; D013997:Time Factors
vernacular_title: Kharakteristika ranneĭ stadii ankiloziruiushchego spondiloartrita.