No abstract available
MeSH terms
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Air Pollution*
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Asthma / diagnosis
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Asthma / etiology*
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Bronchitis / diagnosis
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Carbon Monoxide Poisoning
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Diagnosis, Differential
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Epidemiologic Methods
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Humans
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Hydrocarbons / adverse effects
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Industrial Waste
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Metals
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Nitrogen Oxides / adverse effects
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Oxidation-Reduction
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Ozone / adverse effects
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Particle Size
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Respiratory Hypersensitivity / immunology
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Respiratory Tract Diseases / etiology
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Sulfates / adverse effects
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Sulfur Dioxide
Substances
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Hydrocarbons
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Industrial Waste
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Metals
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Nitrogen Oxides
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Sulfates
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Sulfur Dioxide
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Ozone