No abstract available
Publication types
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Comparative Study
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Adult
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Female
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Forced Expiratory Volume
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Humans
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Lung Diseases, Obstructive / diagnosis*
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Male
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Middle Aged
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Sex Factors
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Smoking
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Spirometry
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Surveys and Questionnaires*
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Telephone
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Vital Capacity