Published on in Vol 21, No 6 (2019): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13574, first published
.
1 Digital Global Health Unit, Imperial College London, Department of Primary Care and Public Health, London, United Kingdom
2 Healthcare Translation Research Group, Department of Paediatrics, University of Oxford, Oxford, United Kingdom