No abstract available
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Age Factors
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Aged
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Double-Blind Method
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Humans
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Influenza Vaccines / therapeutic use*
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Influenza, Human / prevention & control*
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Longitudinal Studies
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Risk
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Vaccines, Attenuated / therapeutic use
Substances
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Influenza Vaccines
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Vaccines, Attenuated