Published on in Vol 6, No 3 (2022): March
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/35503, first published
.
1 Foodsmart, San Francisco, CA, United States
2 Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
3 Department of Biostatistics, Harvard T H Chan School of Public Health, Boston, MA, United States