No abstract available
MeSH terms
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Anthropology, Cultural*
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Carcinoembryonic Antigen / blood
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Humans
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Lung Neoplasms / blood
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Lung Neoplasms / etiology*
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Nicotine / blood
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Risk Factors
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Smoking / adverse effects*
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Smoking / blood
Substances
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Carcinoembryonic Antigen
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Nicotine