Published on in Vol 8, No 11 (2019): November
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/15426, first published
.

1 Department of Medicine, University of Washington , Seattle, WA, US
2 HIV/STD Program, Public Health–Seattle and King County , Seattle, WA, US
3 Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention , Atlanta, GA, US
4 Department of Epidemiology, University of Washington , Seattle, WA, US
5 Department of Global Health, University of Washington , Seattle, WA, US