Published on in Vol 6 , No 8 (2019) :August
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/14724, first published
.

1 Payer+Provider Syndicate, Boston, MA, US
2 The Bowman Family Foundation, Hockessin, DE, US
3 Remove, Remove, MD, US