1. Queen's Veterinary School Hospital; Department of Clinical Veterinary Medicine; Madingley Road Cambridge CB3 0ES
2. Canine Infectious Diseases Research Unit, Department of Veterinary Pathology; University of Glasgow Veterinary School; Glasgow G61 1QH
3. Penhales House; Ruscombe Lane, Ruscombe Reading RG10 9JN
4. Lady Margaret House; St Anne's Road, Prestwich Manchester M25 8LF