No abstract available
MeSH terms
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Biopsy
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Colitis, Ulcerative / epidemiology
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Colitis, Ulcerative / pathology*
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Colonoscopy
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Colorectal Neoplasms / epidemiology*
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Colorectal Neoplasms / pathology
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Colorectal Neoplasms / prevention & control
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Follow-Up Studies
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Humans
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Precancerous Conditions / epidemiology
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Precancerous Conditions / pathology*