No abstract available
MeSH terms
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Adult
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Aged
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Aged, 80 and over
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General Practice / economics
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General Practice / methods*
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Health Plan Implementation
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Humans
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Mass Screening / methods
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Middle Aged
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Pulmonary Disease, Chronic Obstructive / diagnosis*
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Pulmonary Disease, Chronic Obstructive / economics
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Pulmonary Disease, Chronic Obstructive / epidemiology
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Pulmonary Disease, Chronic Obstructive / etiology
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Smoking / adverse effects
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Smoking / epidemiology
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Spirometry / economics
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Spirometry / statistics & numerical data