title: [Chlamydia decreasing mostly in Västerbotten--why?].
authors.affiliation: STD-kliniken, Norrlands universitetssjukhus, Umeå.
authors.forename: Jens
authors.initials: J
authors.lastname: Boman
authors.forename: Elisabet
authors.initials: E
authors.lastname: Nylander
mesh_terms: D000328:Adult; D002690:Chlamydia Infections / Q000453:epidemiology* / Q000517:prevention & control / Q000635:transmission; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D011322:Primary Prevention; D055502:Secondary Prevention; D013548:Sweden / Q000453:epidemiology; D055815:Young Adult