No abstract available
MeSH terms
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Adult
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Cluster Analysis
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Eye Infections, Bacterial / diagnosis*
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Eye Infections, Bacterial / epidemiology
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HIV Infections / epidemiology
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Homosexuality, Male*
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Humans
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Male
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Middle Aged
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San Francisco / epidemiology
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Syphilis / diagnosis*
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Syphilis / epidemiology
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Washington / epidemiology