1. Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
2. Zoo/Exotic Pathology Service, Sacramento, CA, USA
3. Department of Small Animal Clinical Sciences, Texas A&M College of Veterinary Medicine, College Station, TX, USA
4. Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada