Published on in Vol 21, No 3 (2019): March
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12441, first published
.
1 Department of Nutrition and Food Studies, George Mason University, Fairfax, VA, United States
2 College of Health and Human Performance, University of Florida, Gainesville, FL, United States
3 Westat, Rockville, MD, United States
*all authors contributed equally