1. University of Pennsylvania; USA
2. University of California; USA
3. University of Illinois; USA
4. Hagyard Equine Medical Institute; USA
5. Scone Equine Hospital; Australia
6. Equine Medical Center of Ocala; USA
7. University of Bologna; Italy
8. Woodford Equine Hospital; USA
9. Peterson Smith Equine Hospital; USA
10. Mid Atlantic Equine Medical Center; USA
11. University of Zurich; Switzerland
12. Purdue University; Indiana USA
13. Tufts Cummings School of Veterinary Medicine; USA
14. University of Pretoria; South Africa