No abstract available
MeSH terms
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Adult
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Airway Obstruction / drug therapy*
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Clinical Trials as Topic
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Drug Therapy, Combination
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Ephedrine / administration & dosage*
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Ephedrine / therapeutic use
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Forced Expiratory Flow Rates
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Forced Expiratory Volume*
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Humans
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Phenobarbital / administration & dosage
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Phenobarbital / therapeutic use
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Placebos
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Theophylline / administration & dosage*
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Theophylline / therapeutic use
Substances
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Placebos
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Theophylline
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Ephedrine
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Phenobarbital