1. Division of Small Animal Clinical Studies, Department of Veterinary Clinical Studies, University of Glasgow Veterinary School, Bearsden Road, Glasgow G61 1QH, UK
2. Withy Grove Veterinary Clinic, Bamber Bridge, Preston, Lancashire, PR5 6QR, UK
3. Vale Referrals, Stinchcombe, Dursley, Gloucestershire, GL11 6AJ, UK