1. Rossdales Diagnostic Centre Newmarket UK
2. Equine Sports Medicine Centre Bristol Vet School University of Bristol Bristol UK
3. Equine Health and Performance CentreUniversity of Adelaide South Australia SA Australia
4. Department of Small Animal Clinical Science (Cardiology Service) Institute of Veterinary Science Leahurst Campus University of Liverpool Neston Cheshire UK
5. Colorado State University Veterinary Teaching Hospital Fort Collins CO USA