No abstract available
Publication types
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Case Reports
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Clinical Trial
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Randomized Controlled Trial
MeSH terms
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Clinical Trials as Topic / methods*
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Double-Blind Method
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Dyspnea / drug therapy*
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Dyspnea / etiology
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Female
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Humans
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Hydromorphone / therapeutic use
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Lung Diseases, Obstructive / complications*
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Middle Aged
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Narcotics / therapeutic use*
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Random Allocation
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Research Design