No abstract available
MeSH terms
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Bacteria / pathogenicity
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Chlamydophila pneumoniae / isolation & purification
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Coinfection / epidemiology*
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Coinfection / microbiology
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Coinfection / virology
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Humans
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Influenza A Virus, H1N1 Subtype / isolation & purification
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Influenza, Human / epidemiology
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Influenza, Human / virology*
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Middle Aged
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Mycoplasma pneumoniae / isolation & purification
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Orthomyxoviridae / isolation & purification*
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Pneumonia, Bacterial / epidemiology*
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Pneumonia, Bacterial / microbiology
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Risk Factors