Published on in Vol 24, No 3 (2022): March
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/37440, first published
.

1 Institute of Global Health Innovation, Imperial College London, London, United Kingdom
2 School of Public Health, Imperial College London, London, United Kingdom
3 Mental Health Innovations, London, United Kingdom