1. From North Downs Specialist Referrals Bletchingley Surrey RH1 4QP UK
2. Department of Veterinary Clinical Sciences The Royal Veterinary College Hertfordshire UK
3. Ontario Veterinary CollegeUniversity of Guelph Ontario Canada
4. College of Veterinary Medicine and Biomedical Sciences Texas A&M University College Station Texas
5. School of Veterinary Science and Department of Musculoskeletal Biology University of Liverpool Neston UK
6. Department of Clinical Studies‐Philadelphia School of Veterinary Medicine University of Pennsylvania Philadelphia Pennsylvania
7. Sarah Smith Cardiology Etwall Derbyshire UK
8. HeartVets @ Vale Referrals The Animal Hospital Stinchcombe Dursley Glos UK
9. Royal (Dick) School of Veterinary Studies University of Edinburgh and Roslin Institute Scotland UK
10. Dogs & Cats Veterinary Referral and ER Bowie Maryland
11. Small Animal Clinical Sciences University of Florida College of Veterinary Medicine Florida
12. Holter Monitoring Service Dollar Clackmannanshire Scotland UK
13. Boehringer Ingelheim Animal Health Ingelheim am Rhein Germany