1. Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
2. School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
3. Controlled Substances and Cannabis Branch (current), Health Canada, Ottawa, Canada
4. Department of Geography, Western University, London, Canada
5. Lystek International Inc. (current), Cambridge, Canada
6. Air Health Science Division, Water and Air Quality Bureau, Health Canada, Ottawa, Canada
7. Chemical Emergency Preparedness and Response Unit (current), Health Canada, Vancouver, Canada
8. Hazard Identification Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
9. University of Ottawa Heart Institute, Ottawa, Canada
10. Environmental Epidemiology Research Group, McGill University, Montreal, Canada
11. Department of Medicine, University of Ottawa, Ottawa, Canada