No abstract available
MeSH terms
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Adrenergic beta-Agonists / therapeutic use
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Asthma / drug therapy
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Bronchial Spasm / drug therapy
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Humans
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Lung Diseases, Obstructive / drug therapy
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Respiratory Muscles / drug effects
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Theophylline / adverse effects
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Theophylline / economics
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Theophylline / therapeutic use*
Substances
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Adrenergic beta-Agonists
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Theophylline