1. Institute of Comparative Medicine, Division of Companion Animal Studies,
University of Glasgow Veterinary Faculty, Bearsden Road, Bearsden, Glasgow
G61 1 QH, United Kingdom. D.Bennett@vet.gla.ac.uk
2. Royal (Dick) School of Veterinary Studies, Division of Veterinary Clinical
Sciences, The University of Edinburgh, Hospital for Small Animals, Easter
Bush Veterinary Centre, Roslin, Midlothian, Scotland EH25 9RG, United
Kingdom