| Affiliation: | 1. College of Veterinary Medicine and Biomedical Sciences, Colorado State University, , Fort Collins, USA;2. New Bolton Center, University of Pennsylvania, , Kennett Square, USA;3. University of Minnesota, , St Paul, USA;4. Department of Clinical Sciences, School of Veterinary Medicine, Tufts University, , North Grafton, Massachusetts, USA;5. New England Veterinary Center & Cancer Care, , Windsor, Connecticut, USA;6. Ontario Veterinary College, University of Guelph, , Ontario, Canada;7. Department of Veterinary Surgery, College of Veterinary Medicine, University of Missouri, , Columbia, USA |
