1. North Downs Specialist Referrals, Bletchingley, United Kingdom
2. Charter Veterinary Hospital, Roundswell, Barnstaple, Devon, United Kingdom
3. Framlingham Vets, Framlingham, Suffolk, United Kingdom
4. Peninsula Vet Care Emergency and Referral Hospital, Mornington, Victoria, Australia
5. Clinical Sciences and Services Department, The Royal Veterinary College, Hatfield, Herts, United Kingdom
6. Michigan State University, Veterinary Medical Center, East Lansing, Michigan, United States