No abstract available
MeSH terms
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Black People
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Black or African American
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Cadmium / analysis
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Chromium / analysis
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Copper / analysis
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Ethnicity
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Humans
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Hydrocarbons / analysis
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Lead / analysis
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Lung Neoplasms / epidemiology
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Nickel / analysis
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Nicotiana / analysis*
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Paranasal Sinus Neoplasms / epidemiology
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Plants, Toxic*
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Respiratory Tract Neoplasms / epidemiology*
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Soil / analysis*
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South Africa
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Tobacco, Smokeless / analysis*
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Trace Elements / analysis*
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Zinc / analysis
Substances
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Hydrocarbons
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Soil
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Trace Elements
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Cadmium
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Chromium
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Lead
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Copper
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Nickel
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Zinc