1. Division of Small Animal Clinical Studies, University of Glasgow, Bearsden Road, Bearsden, Glasgow G61 1QH
2. Department of Clinical Veterinary Science, University of Bristol, Langford, Bristol BS40 5DU
3. Department of Veterinary Clinical Studies, University of Edinburgh, Edinburgh EH25 9RG
4. Department of Veterinary Pathology, University of Glasgow, Bearsden Road, Bearsden, Glasgow G61 1QH