No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Biomarkers
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Eosinophils / cytology
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Female
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Forced Expiratory Volume
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Humans
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Male
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Middle Aged
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Neutrophils / cytology
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Practice Guidelines as Topic
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Pulmonary Disease, Chronic Obstructive / classification*
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Pulmonary Disease, Chronic Obstructive / diagnosis*
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Severity of Illness Index
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Sputum / cytology*