Published on in Vol 8, No 7 (2019): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12837, first published
.
1 Friends Research Institute, Inc, Los Angeles, CA, United States
2 Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles, Los Angeles, CA, United States