No abstract available
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Asthma / diagnosis*
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Asthma / epidemiology
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Child
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Female
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Health Surveys
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Humans
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Longitudinal Studies
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Male
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Mass Screening / methods*
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Schools
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United States / epidemiology
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Urban Health / statistics & numerical data*