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Breath sound parameters have been suggested to be new biomarkers of airway function in patients with asthma.We investigated the effect of bronchodilation on breath sound parameters in sixty-four children (mean age, 8.9 years; range, 6–16 years) using a breath sound analyzer. The breath sound parameters included frequency limiting 50% and 99% of the power spectrum (F50 and F99), roll-off from 600–1200 Hz...
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