1. School of Public Health Sciences, Faculty of Health, University of Waterloo, Waterloo, Ontario, Canada
2. National Addiction Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, United Kingdom
3. Department of Behavioural Science and Health, University College London, London, United Kingdom
4. Department of Health Behavior, Roswell Park Comprehensive Cancer Center, Buffalo, New York
5. Department of Psychology, University of Waterloo, Waterloo, Ontario, Canada
6. Ontario Institute for Cancer Research, Toronto, Ontario, Canada