Published on in Vol 9, No 1 (2020): January
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13835, first published
.

1 Center for Vulnerable Populations, University of California , San Francisco, CA, US
2 Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center, Harvard University, Boston, MA, US
3 Outpatient Pharmacy, Zuckerberg San Francisco General Hospital , San Francisco, CA, US