1. Department of Companion Animals, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Canada
2. Faculty of Medicine and Health Sciences, Department of Anatomy and Cell Biology, McGill University, Montreal, Canada
3. Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Canada
4. Faculty of Dentistry, McGill University, Montreal, Canada