No abstract available
MeSH terms
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Adult
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Aged
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Comorbidity
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Humans
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Practice Guidelines as Topic
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Pulmonary Disease, Chronic Obstructive / complications*
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Pulmonary Disease, Chronic Obstructive / etiology
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Risk Factors
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Severity of Illness Index
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Smoking / adverse effects
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Systemic Inflammatory Response Syndrome / classification
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Systemic Inflammatory Response Syndrome / etiology*