No abstract available
MeSH terms
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Adenocarcinoma / prevention & control*
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Adult
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Colonic Neoplasms / prevention & control*
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Dietary Supplements*
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Female
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Folic Acid / administration & dosage*
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Follow-Up Studies
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Humans
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Male
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Middle Aged
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Prospective Studies
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Risk
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Vitamins / administration & dosage*