No abstract available
MeSH terms
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Child
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Child, Preschool
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Cost of Illness
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Health Knowledge, Attitudes, Practice*
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Humans
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Immunization Programs / methods*
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Infant
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Influenza A Virus, H1N1 Subtype / drug effects
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Influenza Vaccines*
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Influenza, Human / prevention & control*
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United States
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Vaccination / methods*