1. Small Animal Teaching Hospital, Institute of Veterinary Science, University of Liverpool, United Kingdom
2. Small Animal Teaching Hospital, Institutes of Ageing and Chronic Disease, and Veterinary Science, Liverpool, United Kingdom
3. Department of Small Animal Clinical Science, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, United States
4. CVS Group PLC, ChesterGates Veterinary Specialists, Telford Court, Gates Road, Chester, United Kingdom