Published on in Vol 20, No 3 (2018): March
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/7867, first published
.
1 ICF, Rockville, MD, United States
2 ICF, Fairfax, VA, United States
3 Johnson & Johnson Health and Wellness Solutions, Inc, New Brunswick, NJ, United States