1. Department of Large Animal Clinical Sciences; College of Veterinary Medicine; University of Florida; Gainesville FL USA
2. Department of Large Animal Medicine; College of Veterinary Medicine; University of Georgia; Athens GA USA
3. Department of Physiological Sciences; College of Veterinary Medicine; University of Florida; Gainesville FL USA
4. Gluck Equine Research Center; Department of Veterinary Science; University of Kentucky; Lexington KY USA
5. Rood and Riddle Equine Hospital; Lexington KY USA