Published on in Vol 23, No 9 (2021): September
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/26623, first published
.
1 Department of Medicine, University of California San Francisco, San Francisco, CA, United States
2 Center for Vulnerable Populations, University of California San Francisco, San Francisco, CA, United States
3 Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, United States