Published on in Vol 7, No 11 (2018): November
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/11624, first published
.
1 Center for Community Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
2 Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States