1. Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive NW, Calgary, Alberta, CanadaT2N 4Z6
2. Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive NW, Calgary, Alberta, CanadaT2N 4Z6
3. Department of Biological Sciences, Faculty of Science, University of Calgary, 507 Campus Drive NW, Calgary, Alberta, CanadaT2N 4V8
4. Department of Environment, Government of Nunavut, P.O. Box 377, Kugluktuk, Nunavut, CanadaX0B 0E0
5. Department of Environment and Natural Resources, Government of the Northwest Territories, P.O. Box 2749, Inuvik, Northwest Territories, CanadaX0E 0T0