No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Anti-Bacterial Agents / pharmacology*
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Cephalosporins / pharmacology*
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Enterobacteriaceae / drug effects*
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Enterobacteriaceae / enzymology*
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Enterobacteriaceae / isolation & purification
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Enterobacteriaceae Infections / microbiology*
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Female
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Humans
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Male
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Microbial Sensitivity Tests
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Middle Aged
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Portugal
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beta-Lactamases / biosynthesis*
Substances
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Anti-Bacterial Agents
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Cephalosporins
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beta-Lactamases