Published on in Vol 4, No 2 (2021): Apr-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/19114, first published
.
1 Division of Prevention Science, University of California San Francisco, San Francisco, CA, United States
2 Prevention Research Center, Pacific Institute for Research and Evaluation, Berkeley, CA, United States
3 Klein Buendel, Golden, CO, United States