1 School of Public Health, Edmonton Clinic Health Academy, University of Alberta, 3-300 11405 - 87 Ave NW, Edmonton, AB T6G 1C9, Canada.
2 Support Worker; Supervised Consumption Services, Boyle Street Community Services, 10116-105 Avenue, Edmonton, AB T5H 0K2, Canada.
3 Harm Reduction Nurse, Calgary, AB, Canada.
4 Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, 2500 University Drive NW, Calgary, AB T2N1N4, Canada.
5 School of Public Health, Edmonton Clinic Health Academy, University of Alberta, 3-300 11405 - 87 Ave NW, Edmonton, AB T6G 1C9, Canada. Electronic address: [email protected].