Published on in Vol 22, No 10 (2020): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/21383, first published
.
1 Division of Andrology, Department of Urology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
2 Consortium for Health Activity on Social Media, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States