^a Department of Pathobiology, College of Veterinary Medicine, University of Florida, 2015 SW 16 Avenue, Gainesville, FL 32610-0880, USA

^b Department of Veterinary Clinical Sciences, Washington State University, Pullman, Washington 99164, USA

^c Department of Veterinary Pathobiology, University of Missouri, Columbia, MI 65211, USA

^d Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 SW 16th Avenue, Gainesville, Florida 32611-0136, USA