No abstract available
Keywords:
men; rectal diseases; syphilis.
MeSH terms
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Adult
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Anus Diseases / complications
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Anus Diseases / microbiology*
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Homosexuality, Male / statistics & numerical data*
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Humans
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Male
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Middle Aged
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Pain / microbiology*
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Prevalence
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Rectal Diseases / complications
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Rectal Diseases / microbiology*
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Syphilis / complications*
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Treponema pallidum / genetics