No abstract available
MeSH terms
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Adult
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Age Factors
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Aged
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Aged, 80 and over
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Caliciviridae Infections / epidemiology*
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Chi-Square Distribution
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Disease Outbreaks*
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Female
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Gastroenteritis / epidemiology*
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Humans
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Male
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Middle Aged
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Norwalk virus*
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Nursing Homes*
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Sex Factors
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Spain / epidemiology