1. Centre for Toxicology, School of Environmental Sciences; University of Guelph, Guelph; Ontario Canada
2. Aquatic Toxicology Unit; Ontario Ministry of the Environment and Climate Change; Toronto Ontario Canada
3. Laboratory Services Division; University of Guelph; Guelph Ontario Canada
4. Great Lakes Forestry Centre; Canadian Forest Service; Sault Ste. Marie Ontario Canada
5. Department of Environment and Geography; University of Manitoba; Winnipeg Manitoba Canada