1. Department of Large Animal Clinical Sciences; Texas A&M University; College Station TX 77843
2. Department of Veterinary Pathobiology; Texas A&M University; College Station TX 77843
3. Department of Veterinary Integrative Biosciences; Texas A&M University; College Station TX 77843
4. Department of Small Animal Clinical Sciences; University of Zurich; 8057 Zurich Switzerland
5. Siemens Research and Development; Houston TX 77095
6. Department of Small Animal Clinical Sciences; Texas A&M University; College Station TX 77843