1. Tobacco Center on Regulatory Science, Vermont Center on Behavior and Health, Larner College of Medicine, University of Vermont, Burlington, VT
2. Department of Psychological Science, College of Arts and Science, University of Vermont, Burlington, VT
3. Department of Psychiatry, Larner College of Medicine, University of Vermont, Burlington, VT
4. Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON
5. Department of Psychiatry, University of Toronto, Toronto, ON
6. Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute, Toronto, ON