Published on in Vol 8, No 5 (2020): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18597, first published
.
1 San Francisco Department of Public Health, Center for Public Health Research, San Francisco, CA, United States
2 Department of Pediatrics, University of California San Francisco, San Francisco, CA, United States
3 Department of Psychiatry, University of California San Francisco, San Francisco, CA, United States