1. Department of Environmental Medicine, and
2. Department of Population Health, New York University School of Medicine, Tuxedo, New York, USA
3. Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
4. McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Ontario, Canada
5. Department of Environmental Health Sciences, University of California, Berkeley, Berkeley, California, USA
6. Epidemiology Research Program, American Cancer Society, Atlanta, Georgia, USA
7. Economics Department, Brigham Young University, Provo, Utah, USA