No abstract available
Publication types
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Letter
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Research Support, Non-U.S. Gov't
MeSH terms
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Age Factors
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Aged
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Cluster Analysis
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Cohort Studies
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Comorbidity
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Follow-Up Studies
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Forced Expiratory Volume
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Humans
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Longitudinal Studies
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Middle Aged
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Models, Statistical
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Phenotype
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Proportional Hazards Models
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Pulmonary Disease, Chronic Obstructive / diagnosis*
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Pulmonary Disease, Chronic Obstructive / mortality*
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Risk
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Time Factors