1. Queen's Veterinary School Hospital, University of Cambridge, Madingley Road, Cambridge CB3 0ES
2. Division of Veterinary Pathology, Infection and Immunity, Department of Clinical Veterinary Science, University of Bristol, Langford House, Langford, Bristol BS40 5DH
3. Veterinary Medicines Directorate, Woodham Lane, New Haw, Addlestone, Surrey KT15 3LS