1. K.L. Maddy Equine Analytical Pharmacology Laboratory School of Veterinary Medicine University of California, Davis Davis CA USA
2. Department of Veterinary Molecular Biosciences School of Veterinary Medicine University of California, Davis Davis CA USA
3. Department of Medicine and Epidemiology School of Veterinary Medicine University of California, Davis Davis CA USA
4. Private Practitioner San Diego CA USA
5. Department of Population Health and Reproduction School of Veterinary Medicine University of California, Davis Davis CA USA
6. Department of Surgical & Radiological Sciences School of Veterinary Medicine University of California, Davis Davis CA USA
7. School of Veterinary Medicine University of California, Davis Davis CA USA