Published on in Vol 12, No 2 (2020): Apr-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13924, first published
.

1 Mossavar-Rahmani Center for Business and Government, Harvard Kennedy School, Cambridge, MA, United States
2 Center for Quantitative Health, Massachusetts General Hospital, Boston, MA, United States