1. Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
2. School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
3. Animal Health Centre, British Columbia Ministry of Agriculture, Abbotsford, British Columbia, Canada
4. Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
5. Canadian Cooperative Wildlife Health Centre, National Headquarters, Saskatoon, Saskatchewan, Canada