Published on in Vol 6, No 10 (2018): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/11181, first published
.
1 Department of Behavioral Science, University of Texas MD Anderson Cancer Center, Houston, TX, United States
2 Department of Family and Community Medicine, College of Medicine-Tucson, University of Arizona, Tucson, AZ, United States