No abstract available
MeSH terms
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Adrenergic beta-Agonists / therapeutic use
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Anti-Infective Agents / therapeutic use
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Cholinergic Antagonists / therapeutic use
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Drug Therapy, Combination
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Expectorants / therapeutic use
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Glucocorticoids / therapeutic use
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Humans
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Pulmonary Disease, Chronic Obstructive / drug therapy*
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Theophylline / therapeutic use
Substances
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Adrenergic beta-Agonists
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Anti-Infective Agents
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Cholinergic Antagonists
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Expectorants
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Glucocorticoids
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Theophylline