No abstract available
MeSH terms
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Child, Preschool
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Chloramphenicol / pharmacology*
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Female
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Humans
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Infant
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Male
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Penicillin Resistance
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Penicillins / pharmacology*
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Streptococcus pneumoniae / drug effects*
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United Kingdom
Substances
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Penicillins
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Chloramphenicol