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First Online: 25 August 2018

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: D.M.C. and C.A.R. currently have a contract from VitalFlo, Inc. to conduct a usability study of the VitalFlo spirometer. R.H. reports grants from National Institute for Health Research Collaboration for Leadership in Applied Health Research and Care (NIHR CLAHRC) North Thames, during the conduct of the study; grants from Asthma UK Centre for Applied Research (AUKCAR), other from Medical Innovation Academic Consortium (CASMI), other from AbbVie, other from Amgen, other from Biogen, other from Idec, other from Gilead Sciences, other from GlaxoSmithKline, other from Janssen, other from Pfizer, other from Roche, other from Shire Pharmaceuticals, other from MSD, other from Astellas, other from AstraZeneca, other from DRSU, other from Novartis, other from Universitatsklinikum Hamburg-Eppendorf, other from Teva Pharmaceuticals, and other from Spoonful of Sugar Ltd., outside the submitted work. A.C. reports grants and personal fees from Janssen-Cilag, other from Medicines NZ, personal fees from Novartis, grants from Asthma UK Centre for Applied Research (AUKCAR), personal fees from Spoonful of Sugar Ltd., grants from Innovate UK, grants from A+ charitable trust (Auckland District Health Board), and grants from Maurice and Phyllis Paykel Trust, outside the submitted work. R.J. declares no conflicts of interest.

: This article does not contain any studies with human or animal subjects performed by any of the authors.