1. School of Human Kinetics, University of British Columbia, Vancouver, British Columbia, Canada
2. British Columbia Centre for Disease Control, Vancouver, British Columbia, Canada
3. Swiss Tropical and Public Health Institute, Basel, Switzerland
4. University of Basel, Basel, Switzerland
5. International Agency for Research on Cancer, Lyon, France
6. Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
7. Division of Respiratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
8. Providence Heart and Lung Institute, St. Paul’s Hospital, Vancouver, British Columbia, Canada
9. Faculty of Health Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
10. School of Environmental Health and
11. Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
12. Population Studies Division, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
13. Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, Ontario, Canada
14. Center for Environmental Health Sciences, University of Montana, Missoula, Montana, USA
15. Département de Santé Environnementale et Santé au Travail, Université de Montréal, Montréal, Quebec, Canada
16. Institut National de Santé Publique du Québec, Montréal, Quebec, Canada
17. Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA
18. London School of Hygiene and Tropical Medicine, University of London, London, United Kingdom