No abstract available
MeSH terms
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Animals
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Bronchitis / complications
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Bronchitis / drug therapy*
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Bronchodilator Agents / therapeutic use*
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Cats
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Child
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Child, Preschool
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Chronic Disease
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Cough / complications
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Cough / drug therapy*
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Dyspnea / complications
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Dyspnea / drug therapy*
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Female
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Guinea Pigs
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Humans
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Male
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Middle Aged
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Piperazines / therapeutic use*
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Rats
Substances
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Bronchodilator Agents
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Piperazines