No abstract available
MeSH terms
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Child, Preschool
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Female
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Haemophilus influenzae / physiology
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Humans
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Infant
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Male
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Moraxella catarrhalis / physiology
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Multivariate Analysis
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Otitis Media / epidemiology*
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Otitis Media / microbiology
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Otitis Media / pathology
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Streptococcus pneumoniae / physiology
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Streptococcus pyogenes / physiology