No abstract available
MeSH terms
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Asthma / therapy*
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Bronchodilator Agents / administration & dosage*
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Helium / administration & dosage*
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Humans
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Nebulizers and Vaporizers
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Oxygen / administration & dosage*
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Posture*
Substances
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Bronchodilator Agents
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Helium
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heliox
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Oxygen