No abstract available
Keywords:
COPD; analgesics; anxiolytics; benzodiazepines; opioids.
MeSH terms
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Analgesics, Opioid / therapeutic use
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Benzodiazepines* / therapeutic use
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Central Nervous System
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Cohort Studies
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Humans
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Pulmonary Disease, Chronic Obstructive* / drug therapy
Substances
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Benzodiazepines
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Analgesics, Opioid