Published on in Vol 21, No 4 (2019): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/11735, first published
.
1 Princess Margaret Cancer Centre, Toronto, ON, Canada
2 Centre for Addiction and Mental Health, Toronto, ON, Canada
3 Division of Medical Oncology and Hematology,, Department of Medicine, University of Toronto, Toronto, ON, Canada