No abstract available
Publication types
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Clinical Trial
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Randomized Controlled Trial
MeSH terms
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Aerosols
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Atropine Derivatives / pharmacology*
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Bronchitis / physiopathology*
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Humans
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Ipratropium / administration & dosage
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Ipratropium / pharmacology*
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Sputum / drug effects*
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Time Factors
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Viscosity
Substances
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Aerosols
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Atropine Derivatives
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Ipratropium