No abstract available
MeSH terms
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Disease Progression
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Emergency Medical Services / statistics & numerical data
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Emergency Service, Hospital / statistics & numerical data
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Humans
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Oximetry / methods
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Oxygen / adverse effects
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Oxygen / blood*
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Oxygen / therapeutic use*
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Predictive Value of Tests
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Pulmonary Disease, Chronic Obstructive / blood*
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Pulmonary Disease, Chronic Obstructive / classification
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Pulmonary Disease, Chronic Obstructive / epidemiology
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Pulmonary Disease, Chronic Obstructive / therapy*