Published on in Vol 6, No 4 (2018): April
1 Independent Researcher, Vancouver, BC, Canada
2 Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
3 Research Associate Professor, Department of Health Behavior and Health Education, University of Michigan, Ann Arbor, MI, United States
4 Centre for Behaviour Change, University College London, London, United Kingdom
5 Division of Infectious Diseases, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
*these authors contributed equally