1. Nicotine Dependence Service, Addictions Program, Centre for Addiction and Mental Health , Toronto , Canada
2. Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto , Toronto , Canada
3. Department of Family and Community Medicine, Faculty of Medicine, University of Toronto , Toronto , Canada
4. Department of Psychiatry, University of Toronto , Toronto , Canada
5. Acute Care Program, Addiction Division, Centre for Addiction and Mental Health , Toronto , Canada
6. Dalla Lana School of Public Health, University of Toronto , Toronto , Canada
7. Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health , Toronto , Canada