Published on in Vol 8, No 4 (2019): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12870, first published
.
1 Diagnostic Radiology & Nuclear Medicine, University of Maryland School of Medicine, Baltimore, MD, United States
2 Epidemiology & Public Health, University of Maryland School of Medicine, Baltimore, MD, United States