No abstract available
Publication types
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Comparative Study
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Editorial
MeSH terms
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Adult
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Age Factors
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Aged
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Aged, 80 and over
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Clinical Trials as Topic
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Cohort Studies
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Humans
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Mass Screening
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Middle Aged
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Pulmonary Disease, Chronic Obstructive / diagnosis*
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Pulmonary Disease, Chronic Obstructive / etiology
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Pulmonary Disease, Chronic Obstructive / prevention & control
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Pulmonary Disease, Chronic Obstructive / therapy
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Risk Factors
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Smoking / adverse effects
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Smoking Cessation
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Spirometry