Document Type: Original Article

Authors

1 1.Environmental Health Services, BC Centre for Disease Control, BC, Canada 2.Faculty of Heath Sciences, Simon Fraser University. Burnaby, British Columbia, Canada

2 Occupational and Environmental Division, School of Population and Public Health, University of British Columbia, BC, Canada

3 1.Environmental Health Services, BC Centre for Disease Control, BC, Canada 2.Occupational and Environmental Division, School of Population and Public Health, University of British Columbia, BC, Canada