1. Health Canada, Environmental and Radiation Health Sciences Directorate, Consumer & Clinical Radiation Protection Bureau, Ottawa, Ontario, Canada
2. Health Canada, Population Studies Division, Biostatistics Section, Tunney's Pasture, Ottawa, Ontario, Canada
3. Health Canada, Environmental Health Program, Health Programs Branch, Regions and Programs Bureau, Halifax, Nova Scotia, Canada
4. Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Ontario, Canada
5. Division of Neurology, Department of Pediatrics, Hospital for Sick Children, University of Toronto
6. Department of Health Sciences, Carleton University, Ottawa, Ontario, Canada
7. GGD Amsterdam Public Health Service, Environmental Health Department, Amsterdam, The Netherlands
8. Health Canada, Environmental and Radiation Health Sciences Directorate, Office of Science Policy, Liaison and Coordination, Ottawa, Ontario, Canada