No abstract available
MeSH terms
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Adolescent
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Child
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Child, Preschool
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Chronic Disease
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Haemophilus influenzae / isolation & purification
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Humans
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Infant
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Moraxella catarrhalis / isolation & purification
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Sinusitis / microbiology*
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Staphylococcus aureus / isolation & purification
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Streptococcus pneumoniae / isolation & purification