No abstract available
MeSH terms
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Humans
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Rectal Neoplasms / diagnosis*
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Rectal Neoplasms / mortality
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Retrospective Studies
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Sigmoid Neoplasms / diagnosis*
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Sigmoid Neoplasms / mortality
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Sigmoidoscopy* / adverse effects
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Sigmoidoscopy* / mortality
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Sigmoidoscopy* / statistics & numerical data
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Time Factors