1. K.L. Maddy Equine Analytical Chemistry Laboratory; School of Veterinary Medicine; University of California; Davis CA USA
2. Department of Veterinary Molecular Biosciences; School of Veterinary Medicine; University of California; Davis CA USA
3. Department of Population Health and Reproduction; School of Veterinary Medicine; University of California; Davis CA USA
4. HFL Sport Science, Inc.; Lexington KY USA