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Objective To explore the diagnostic value of fractionated exhaled nitric oxide(Fe NO)measurement in patients with asthma-chronic obstructive pulmonary disease(COPD)overlap syndrome(ACOS).Methods Eightyone patients with ACOS,76 patients with asthma,82 patients with COPD and 39 healthy non-smoking subjects
Objective To explore the diagnostic value of fractionated exhaled nitric oxide (Fe NO) measurement in patients with asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS). Methods Eightyone patients with ACOS, 76 patients with asthma, 82 patients with COPD and 39 healthy non-smoking subjects