Published on in Vol 7, No 4 (2019): Oct-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13042, first published
.

1 Faculty of Health and Medical Sciences, University of Surrey , Guildford , GB
2 Brunel Business School, Brunel University London , Uxbridge , GB
3 Faculty of Business and Law, University of Portsmouth , Portsmouth , GB
4 Nuffield Department of Primary Care Health Science, University of Oxford , Oxford , GB