Ottawa Hospital Research Institute - Clinical Epidemiology Program, University of Ottawa - Ottawa Hospital Research Institute, University of Ottawa - Ottawa Hospital Research Institute, Public Health Agency of Canada, University of Ottawa - Ottawa Hospital Research Institute, University of Ottawa - Department of Civil Engineering, Ontario Ministry of the Environment, University of Windsor, University of Windsor, University of Windsor, University of Waterloo, University of Waterloo, University of Waterloo, University of Toronto, Hamilton Public Health Services, Hamilton Public Health Services, Ottawa Public Health and University of Ottawa - Department of Civil Engineering