No abstract available
MeSH terms
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Aged
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Bronchial Diseases / physiopathology
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Carbon Dioxide
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Chronic Disease
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Female
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Humans
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Lung / physiopathology*
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Male
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Middle Aged
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Oxygen
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Physical Exertion
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Pulmonary Emphysema / physiopathology
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Respiration*
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Respiratory Tract Diseases / physiopathology*
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Spirometry