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Objective To determine whether fractional exhaled nitric oxide (FENO) has a utility as a diagnostic or predictive maker in acute exacerbations of asthma in children. Design Analysis of data collected in a pediatric asthma cohort. Setting Pediatric Chest Clinic of a tertiary care hospital Methods A cohort of children with asthma was followed up every 3 months in addition to any acute exacerbation...
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