1. Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
2. Public Health Ontario, Toronto, Ontario, Canada
3. ICES, Toronto, Ontario, Canada
4. Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
5. Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada
6. Department of Sociology, University of New Brunswick, Fredericton, New Brunswick, Canada
7. New Brunswick Institute for Research, Data, and Training, Fredericton, New Brunswick, Canada
8. School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, Ontario, Canada
9. Department of Medicine, McGill University, Montreal, Quebec, Canada
10. Division of Clinical Epidemiology, McGill University Health Centre, Montreal, Quebec, Canada
11. Department of Family Medicine and Public Health, University of California, San Diego, La Jolla, California, USA
12. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, USA
13. School of Public Health, San Diego State University, San Diego, California, USA
14. Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada
15. Harvard-Smithsonian Centre for Astrophysics, Cambridge, Massachusetts, USA
16. College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon, USA