Behaviour change and stabilization of seroprevalence levels in communities of injecting drug users: correlation or causation?
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D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology* / Q000635:transmission; D006679:HIV Seropositivity; D006801:Humans; D015233:Models, Statistical; D009519:New York City; D015995:Prevalence; D012307:Risk Factors; D019966:Substance-Related Disorders