title: Introductory editorial: the analysis of a natural experiment in HIV control.
authors.forename: Christopher K
authors.initials: CK
authors.lastname: Fairley
authors.forename: Andrew E
authors.initials: AE
authors.lastname: Grulich
authors.forename: John C
authors.initials: JC
authors.lastname: Imrie
authors.forename: Marian
authors.initials: M
authors.lastname: Pitts
mesh_terms: D001315:Australia / Q000453:epidemiology; D018563:Disease Notification / Q000379:methods*; D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control*; D006266:Health Education / Q000458:organization & administration*; D006292:Health Priorities; D006801:Humans; D008403:Mass Screening / Q000458:organization & administration; D009313:National Health Programs / Q000458:organization & administration*; D009937:Organizational Objectives; D011322:Primary Prevention / Q000458:organization & administration*