No abstract available
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Aged
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China / epidemiology
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Female
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Humans
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Logistic Models
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Male
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Middle Aged
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Multivariate Analysis
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Nasopharyngeal Neoplasms / epidemiology
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Nasopharyngeal Neoplasms / etiology*
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Risk Factors