Published on in Vol 8 , No 5 (2019) :May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/14382, first published
.

1 Center for Mental Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, US
2 Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA, US