No abstract available
MeSH terms
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Asian People / statistics & numerical data*
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China / epidemiology
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Cohort Studies
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Condoms / statistics & numerical data*
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HIV Infections / epidemiology
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HIV Infections / prevention & control*
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Health Knowledge, Attitudes, Practice
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Homosexuality, Male / psychology
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Homosexuality, Male / statistics & numerical data*
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Humans
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Male
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Mass Screening
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Prevalence
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Prospective Studies
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Risk Factors
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Sentinel Surveillance
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Sex Work / statistics & numerical data*
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Sexual Behavior / statistics & numerical data*
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Sexual Partners*
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Spouses
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Syphilis / epidemiology
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Syphilis / prevention & control*