No abstract available
MeSH terms
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Anticarcinogenic Agents / therapeutic use*
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Asbestos / adverse effects
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Carotenoids / adverse effects
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Carotenoids / therapeutic use*
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Controlled Clinical Trials as Topic*
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Heart Diseases / prevention & control
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Humans
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Lung Neoplasms / etiology
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Lung Neoplasms / prevention & control*
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Neoplasms / prevention & control*
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Smoking / adverse effects*
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beta Carotene
Substances
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Anticarcinogenic Agents
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beta Carotene
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Asbestos
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Carotenoids