No abstract available
MeSH terms
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Adult
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Age Factors
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Aged
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Cholelithiasis / epidemiology
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Cholelithiasis / etiology*
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Colitis / epidemiology
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Colitis / etiology*
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Colonic Neoplasms / epidemiology
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Colonic Neoplasms / etiology*
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Digestive System Physiological Phenomena*
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Epidemiologic Methods
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Feces
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Female
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Humans
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Male
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Middle Aged
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Risk
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Sex Factors