No abstract available
Publication types
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Clinical Trial
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Letter
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Randomized Controlled Trial
MeSH terms
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Asthma / drug therapy*
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Asthma / etiology
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Cetirizine
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Clinical Trials as Topic
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Double-Blind Method
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Histamine H2 Antagonists / therapeutic use*
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Humans
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Hydroxyzine / analogs & derivatives*
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Hydroxyzine / therapeutic use
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Pollen*
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Random Allocation
Substances
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Histamine H2 Antagonists
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Hydroxyzine
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Cetirizine