1. Marion DuPont Scott Equine Medical Center; Virginia-Maryland Regional College of Veterinary Medicine; Virginia Polytechnic and State University; Leesburg Virginia
2. Department of Large Animal Clinical Sciences; College of Veterinary Medicine; Michigan State University; East Lansing Michigan
3. Department of Clinical Studies New Bolton Center; University of Pennsylvania; Kennett Square Pennsylvania
4. Department of Veterinary Clinical Medicine; College of Veterinary Medicine, University of Illinois; Urbana Illinois
5. Rood and Riddle Equine Hospital; Lexington Kentucky
6. Department of Small Animal Clinical Sciences; College of Veterinary Medicine; Michigan State University; East Lansing Michigan