No abstract available
Publication types
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Research Support, N.I.H., Extramural
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Research Support, U.S. Gov't, P.H.S.
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Review
MeSH terms
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Adult
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Bronchodilator Agents / therapeutic use*
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Clinical Trials as Topic
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Disease Progression
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Female
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Humans
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Male
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Middle Aged
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Multicenter Studies as Topic
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Pulmonary Disease, Chronic Obstructive / drug therapy
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Pulmonary Disease, Chronic Obstructive / physiopathology
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Pulmonary Disease, Chronic Obstructive / prevention & control*
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Respiratory Function Tests
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Risk Factors
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Smoking Cessation*
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Treatment Outcome