1. Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
2. Laboratory of Veterinary Pathology, Department of Pathology, Bacteriology and Poultry Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
3. Wolvega Equine Hospital, Oldeholtpade, the Netherlands
4. Department of Surgery and Anaesthesiology of Domestic Animals, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
5. Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
6. Tierärzliche Klinik Domäne Karthaus, Weddern 16c, Dülmen, Germany
7. Bosdreef Equine Clinic, Spelonckvaart, Moerbeke-Waas, Belgium
8. Animal Breeding and Genomics Centre, Wageningen University and Research Centre, Wageningen, the Netherlands
9. Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium