No abstract available
Publication types
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Comment
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Comparative Study
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Letter
MeSH terms
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Aged
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Aldehydes / analysis*
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Asthma / diagnosis*
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Biomarkers / analysis
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Breath Tests
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Child, Preschool
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Female
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Humans
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Male
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Middle Aged
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Prognosis
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Pulmonary Disease, Chronic Obstructive / diagnosis*
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Sensitivity and Specificity
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Severity of Illness Index