1. Department of Veterinary Medicine, University of Cambridge, Madingley Rd., Cambridge CB3 0ES, UK
2. Rossdales Veterinary Surgeons, Cotton End Rd., Exning, Newmarket CB8 7NN, UK
3. Hallmarq Veterinary Imaging, Unit 5 Bridge Park, Merrow Lane, Guildford GU4 7BF, UK
4. Swayne and Partners Veterinary Surgeons, Western Way, Bury St Edmunds IP33 3SP, UK