Published on in Vol 8, No 5 (2021): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/27113, first published
.
1 Center for Economic and Social Research, University of Southern California, Los Angeles, CA, United States
2 RAND Corporation, Santa Monica, CA, United States
3 Department of Economics, University of Southern California, Los Angeles, CA, United States