Using fractional exhaled nitric oxide to guide step-down treatment decisions in asthma: practical considerations.
Kay WangJan Y VerbakelJason Lee OkeAlexander Fleming-NouriNorihiro HaradaRyo AtsutaTomoyuki FujisawaTomotaka KawayamaHiromasa InoueStephen LazarusStanley SzeflerFernando D MartinezDominick E ShawIan D PavordMichael ThomasPublished in: The European respiratory journal (2020)