No abstract available
MeSH terms
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Age Factors
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Aged
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Colonic Neoplasms / mortality
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District of Columbia
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Epidemiologic Methods
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Humans
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Ink*
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Male
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Middle Aged
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Neoplasms / epidemiology
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Neoplasms / mortality*
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Occupational Diseases / mortality*
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Prostatic Neoplasms / mortality
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Racial Groups