No abstract available
MeSH terms
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Acute Disease
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Adolescent
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Adult
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Air Pollutants / toxicity
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Air Pollution*
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Asthma / epidemiology
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Bronchitis / epidemiology
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Child
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Child Welfare*
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Child, Preschool
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Cross-Over Studies
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Follow-Up Studies
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Humans
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Infant
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Infant, Newborn
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Longitudinal Studies
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Respiratory Tract Diseases / chemically induced
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Respiratory Tract Diseases / epidemiology*
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Respiratory Tract Diseases / etiology
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Respiratory Tract Infections / epidemiology
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Risk Factors