1. Departments of Physiological Sciences; Center for Veterinary Health Sciences; Oklahoma State University; Stillwater OK 74078 USA
2. Department of Veterinary Pathobiology; Center for Veterinary Health Sciences; Oklahoma State University; Stillwater OK 74078 USA
3. Department of Veterinary Clinical Sciences; Center for Veterinary Health Sciences; Oklahoma State University; Stillwater OK 74078 USA
4. Department of Pharmaceutical Sciences; College of Pharmacy; University of Oklahoma Health Sciences Center; Oklahoma City OK 73117 USA