1. Small Animal Clinical Studies, University College Dublin School of Veterinary Medicine Dublin Ireland
2. Department of Pathobiology, Ontario Veterinary College University of Guelph Guelph Ontario Canada
3. Department of Clinical Studies, Ontario Veterinary College University of Guelph Guelph Ontario Canada
4. Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire Université de Montréal St Hyacinthe Quebec Canada