No abstract available
Publication types
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Multicenter Study
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Observational Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Absenteeism
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Asthma / drug therapy
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Asthma / epidemiology*
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Child
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Disease Progression
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Drug Resistance
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Education / statistics & numerical data*
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Female
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Humans
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Male
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Patient Acceptance of Health Care / statistics & numerical data*
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Population*
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Schools
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Severity of Illness Index
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United States / epidemiology