1 | Department of Population Studies and Surveillance, Cancer Care Ontario, Toronto, Canada |
2 | Department of Health Studies and Gerontology, University of Waterloo, Waterloo, Canada |
3 | Dalla Lana School of Public Health, University of Toronto, Toronto, Canada |
4 | Tobacco Control Programme, Health Canada, Ottawa, Canada |
5 | Population Health Research Group, University of Waterloo, Waterloo, Canada |