No abstract available
MeSH terms
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Carcinoma, Bronchogenic / diagnosis
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Carcinoma, Bronchogenic / epidemiology
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Carcinoma, Bronchogenic / surgery*
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Czechoslovakia
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Germany, East
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Humans
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Lung Neoplasms / diagnosis
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Lung Neoplasms / epidemiology
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Lung Neoplasms / surgery*