Published on in Vol 22, No 10 (2020): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/16782, first published
.
1 School of Health and Related Research, University of Sheffield, Sheffield, United Kingdom
2 Centre for Behavioural Science and Applied Psychology, Sheffield Hallam University, Sheffield, United Kingdom
3 Sheffield Adult CF Centre, Sheffield Teaching Hospitals, Sheffield, United Kingdom