Published on in Vol 22, No 5 (2020): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18378, first published
.
1 Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
2 Faculty of Linguistics, University of Oxford, Oxford, United Kingdom
3 Barts Health NHS Trust, London, United Kingdom