No abstract available
MeSH terms
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Colitis, Ulcerative / epidemiology
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Colitis, Ulcerative / etiology*
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Colitis, Ulcerative / prevention & control
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Crohn Disease / epidemiology
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Crohn Disease / etiology*
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Crohn Disease / prevention & control
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Environment*
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Humans
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Incidence
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Risk Assessment
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Risk Factors