Funding for this research was provided by:
Received: 12 April 2020
Accepted: 2 June 2020
First Online: 9 June 2020
Ethics approval and consent to participate
: Written informed consent has been obtained from each study participant. The study design, protocol and paperwork were IRB approved by West Midlands – Solihull Research Ethics Committee (REC reference: 15/WM/1226).
: Not applicable.
: K.S reports grants from AstraZeneca, grants from Asthma UK, outside the submitted work. T. W reports personal fees and other from MyMHealth, grants from Innovate UK, grants from GSK, grants and personal fees from AstraZeneca, grants and personal fees from Synairgen and personal fees from BI, outside the submitted work. A. F, D. H, C. N, H. M, A. A, D. K, L. P, M. H, HM. H, A. W and R. K report no potential conflicts of interest.