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Introduction Fractional exhaled nitric oxide (FeNO) is a non-invasive marker of airway inflammation, and a new portable analyzer (NIOX VERO®) is now available. Our studies aimed to assess the agreement of measurements between NIOX VERO® and a reference device (NIOX MINO®) and assess the reproducibility of NIOX VERO®. Methods Paired FeNO readings were obtained from 112 subjects from both devices...
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