Published on in Vol 21, No 6 (2019): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13313, first published
.
1 Informatics Institute, University of Alabama at Birmingham, Birmingham, AL, United States
2 Department of Biomedical Informatics, University of Utah, Salt Lake City, UT, United States