1. Health Analysis Division, Statistics Canada, Ottawa, Ontario, Canada
2. Department of Sociology, University of New Brunswick, Fredericton, New Brunswick, Canada
3. New Brunswick Institute for Research, Data, and Training, Fredericton, New Brunswick, Canada
4. Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
5. School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
6. College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon, USA
7. Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada
8. Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA
9. Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri, United States
10. Department of Epidemiology, Biostatistics & Occupational Health, McGill University, Montreal, Quebec, Canada
11. Air Health Science Division, Health Canada, Ottawa, Ontario, Canada
12. Population Studies Division, Health Canada, Ottawa, Ontario, Canada