1. 1Faculty of Health and Social Development, University of British Columbia Okanagan, Kelowna, British Columbia, Canada
2. 2School of Nursing, University of British Columbia, Vancouver, British Columbia, Canada
3. 3Canadians for Safe Access, Victoria, British Columbia, Canada
4. 4School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
5. 5Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British Columbia, Canada