1. Department of Veterinary Science; Small Animal Teaching Hospital; University of Liverpool, Leahurst; Chester High Road Neston CH64 7TE UK
2. School of Veterinary Medicine; College of Medical; Veterinary and Life Sciences; University of Glasgow; Bearsden Road Glasgow G61 1QH UK
3. Davies Veterinary Specialists; Manor Farm Business Park Higham Gobion Hertfordshire SG5 3HR UK