1. Division of Analytical and Environmental Toxicology; Department of Laboratory Medicine and Pathology; University of Alberta; Edmonton Alberta T6G 2G3 Canada
2. Wildlife Research Division, Science and Technology Branch; Environment and Climate Change Canada; Government of Canada; Winnipeg Manitoba R3C 4W2 Canada
3. Department of Biological Sciences; University of Alberta; Edmonton Alberta T6G 2E9 Canada
4. Wildlife Research Division, Science and Technology Branch; Environment and Climate Change Canada; Edmonton Alberta T6G 2E9 Canada
5. Department of Occupational and Environmental Health; College of Public Health; University of Iowa; Iowa City IA 52242-5000 USA
6. Department of Environmental & Occupational Health Sciences; University of Washington; Seattle WA 98105-6099 USA
7. Science for Life Laboratory; Department of Environmental Science and Analytical Chemistry; Stockholm University; 10691 Stockholm Sweden