Published on in Vol 7 , No 3 (2020) :Jul-Sep
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/19196, first published
.

1 Department of Pharmacology & Toxicology, University of Toronto, Toronto, ON, Canada
2 Problem-Based Online Health Consultancy, Toronto, ON, Canada
*all authors contributed equally