| Affiliation: | 1. Department of Clinical Sciences and Services, Royal Veterinary College, University of London, North Mymms, Hertfordshire, UK;2. Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA;3. Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA;4. Department of Biomedical Sciences, School of Veterinary Medicine, Ross University, St Kitts and Nevis, Basseterre;5. Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada |
