1. Department of Epidemiology, Biostatistics and Occupational Health; McGill University; Montréal QC Canada
2. Institute for Health and Social Policy; McGill University; Montréal QC Canada
3. Environmental Chemistry and Technology Program; University of Wisconsin; Madison WI USA
4. Wisconsin State Laboratory of Hygiene; University of Wisconsin; Madison WI USA
5. Institute on the Environment; University of Minnesota; Minneapolis MN USA