William J. TranquilliDepartment of Veterinary Clinical Medicine, Division of Anesthesiology, College of Veterinary Medicine, University of Illinois, Urbana-Champaign, IL 61801.
Kurt A. GrimmDepartment of Veterinary Clinical Medicine, Division of Anesthesiology, College of Veterinary Medicine, University of Illinois, Urbana-Champaign, IL 61801.