1. University of British Columbia, Faculty of Medicine, Vancouver, British Columbia, Canada
2. Canadian Institute for Substance Use Research, University of Victoria, Victoria, British Columbia, Canada
3. Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, Nanaimo, British Columbia, Canada
4. Department of Chemistry, University of Victoria, Victoria, British Columbia, Canada
5. Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada
6. Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA