Published on in Vol 23, No 2 (2021): February
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/19306, first published
.
1 Global Digital Health Unit, Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, United Kingdom
2 Department of Public Health and Primary Care, Leiden University Medical Center, Leiden, Netherlands