No abstract available
MeSH terms
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Adult
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Anti-Bacterial Agents / therapeutic use
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Bisexuality
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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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Oral Ulcer / drug therapy
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Oral Ulcer / microbiology*
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Penicillin G Benzathine / therapeutic use
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Syphilis / diagnosis*
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Syphilis / drug therapy
Substances
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Anti-Bacterial Agents
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Penicillin G Benzathine