Turner, Steve WChang, Anne B.Yang, Ian A.2019-12-242019-12-242019-12-01Turner, S W, Chang, A B & Yang, I A 2019, 'Clinical utility of fractional exhaled nitric oxide in the management of asthma and COPD', Breathe, vol. 15, no. 4, pp. 306-316. https://doi.org/10.1183/20734735.0268-20191810-6838https://hdl.handle.net/2164/13431Footnotes Conflict of interest: S.W. Turner has received apparatus at no cost from Circassia (and formerly Aerocrine) for measuring nitric oxide in three research studies. Conflict of interest: A.B. Chang reports grants from National Health and Medical Research Council, Australia related to the submitted work (multiple grants relating to cough, bronchiectasis and PBB). Other grants and interests from GSK (member of a data monitoring committee relating to an unlicensed vaccine), Up to Date (author of sections on paediatric cough) and BMJ Evidence Centre (author of two chapters on paediatric asthma with monies received (to Institution)) are outside the submitted work. Conflict of interest: I.A. Yang has nothing to disclose. Copyright ©ERS 201911291208engR Medicine (General)R1Journal article10.1183/20734735.0268-2019154