No abstract available
MeSH terms
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Aged, 80 and over
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Blood Gas Analysis
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Disease Progression*
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Female
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Humans
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Hypoxia / etiology*
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Hypoxia / therapy
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Oxygen Inhalation Therapy / adverse effects*
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Pulmonary Disease, Chronic Obstructive / therapy*
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Respiratory Insufficiency / etiology
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Respiratory Insufficiency / therapy