Cathy L. GreenfieldFrom the Departments of Veterinary Clinical Medicine (Greenfield), Veterinary Pathobiology (Messick, Solter), and Veterinary Biosciences (Schaeffer), College of Veterinary Medicine, University of Illinois, Urbana, IL 61802.
Joanne B. MessickFrom the Departments of Veterinary Clinical Medicine (Greenfield), Veterinary Pathobiology (Messick, Solter), and Veterinary Biosciences (Schaeffer), College of Veterinary Medicine, University of Illinois, Urbana, IL 61802.
Philip F SolterFrom the Departments of Veterinary Clinical Medicine (Greenfield), Veterinary Pathobiology (Messick, Solter), and Veterinary Biosciences (Schaeffer), College of Veterinary Medicine, University of Illinois, Urbana, IL 61802.
David J. SchaefferFrom the Departments of Veterinary Clinical Medicine (Greenfield), Veterinary Pathobiology (Messick, Solter), and Veterinary Biosciences (Schaeffer), College of Veterinary Medicine, University of Illinois, Urbana, IL 61802.