1. School of Veterinary Medicine and Biomedical Sciences, University of Nebraska–Lincoln, Lincoln, NE (Moxley, Steffen)
2. Department of Pathobiology and Population Medicine, Mississippi State University, Mississippi State, MS (Smith)
3. Great Plains Veterinary Educational Center, School of Veterinary Medicine and Biomedical Sciences, University of Nebraska–Lincoln, Clay Center, NE (Grotelueschen)
4. Midwest Feedlot Services, Kearney, NE (Edwards)