1. K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine; University of California; 620 West Health Sciences Drive Davis CA 95616 USA
2. Department of Veterinary Molecular Biosciences, School of Veterinary Medicine; University of California; 620 West Health Sciences Drive Davis CA 95616 USA
3. Willow Oak Equine; 33558 County Road 24 Woodland CA 95696 USA