1. Department of Medicine and Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
2. Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
3. Department of Medicine
4. Hospital for Sick Children, Toronto, Ontario, Canada
5. Centre for Addiction and Mental Health, Toronto, Ontario, Canada; and
6. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
7. School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
8. Institute for Clinical Evaluative Sciences, Ottawa, Ontario, Canada
9. Leslie Dan Faculty of Pharmacy
10. Department of Psychiatry
11. Department of Family and Community Medicine
12. Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
13. Ontario Tobacco Research Unit, Toronto, Ontario, Canada