No abstract available
MeSH terms
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Child
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Gastrointestinal Hemorrhage / etiology*
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Humans
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Intestinal Polyps / complications
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Intestinal Polyps / pathology*
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Male
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Metaplasia
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Ossification, Heterotopic / complications
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Ossification, Heterotopic / pathology*
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Rectal Diseases / complications
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Rectal Diseases / pathology*
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Rectum / pathology