No abstract available
MeSH terms
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Adolescent
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Age Factors
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Anaerobiosis
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Bacteria / isolation & purification*
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Child
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Child, Preschool
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Chlamydia trachomatis / isolation & purification
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Ear, Middle / microbiology
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Haemophilus influenzae / isolation & purification
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Humans
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Nasopharynx / microbiology
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Otitis Media / microbiology*
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Streptococcus pneumoniae / isolation & purification