No abstract available
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Aged
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Female
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Health Surveys
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Humans
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Lung Diseases, Obstructive / physiopathology
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Lung Volume Measurements* / methods*
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Male
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Mathematics
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Middle Aged
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Nitrogen
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Residual Volume*
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Respiration