Published on in Vol 7, No 2 (2021): Apr-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/23671, first published
.
1 MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
2 Centre for Medical Education, Cardiff University, Cardiff, United Kingdom
3 Division of Population Medicine, Cardiff University, Cardiff, United Kingdom