No abstract available
MeSH terms
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Adolescent
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Adult
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China / epidemiology
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Condoms / statistics & numerical data*
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Cross-Sectional Studies
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Female
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HIV Infections / complications*
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HIV Infections / epidemiology*
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Humans
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Interviews as Topic
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Middle Aged
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Needle Sharing / statistics & numerical data
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Prevalence
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Sex Work / statistics & numerical data
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Substance Abuse Treatment Centers / statistics & numerical data
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Substance Abuse, Intravenous / complications*
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Substance Abuse, Intravenous / epidemiology
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Syphilis / complications*
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Syphilis / epidemiology*
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Young Adult