No abstract available
Publication types
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Letter
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Research Support, N.I.H., Extramural
MeSH terms
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Anti-Bacterial Agents / therapeutic use
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Child, Preschool
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Humans
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Length of Stay*
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Massachusetts
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Penicillin Resistance*
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Penicillins / therapeutic use
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Pneumococcal Infections / drug therapy
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Pneumococcal Infections / microbiology*
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Severity of Illness Index
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Streptococcus pneumoniae*
Substances
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Anti-Bacterial Agents
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Penicillins