Affiliation: | 1. Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island;2. Department of Pathobiology, Ontario Veterinary College, University of Guelph, Ontario, Canada;3. Department of Veterinary Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island;4. Department of Clinical Sciences, Tufts University Cummings School of Veterinary Medicine, Boston, Massachusetts, USA |