Published on in Vol 20, No 10 (2018): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/11668, first published
.
1 Schroeder Institute, Truth Initiative, Washington, DC, United States
2 Department of Oncology, Georgetown University Medical Center / Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center, Washington, DC, United States