Department of Pathobiological Sciences (Negrão Watanabe, Evans, Langohr, Del Piero) and Louisiana Animal Disease Diagnostic Laboratory (Negrão Watanabe, Evans, Langohr, Del Piero), School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA.
Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY (Dubovi).
School of Veterinary Medicine, University of Pennsylvania, New Bolton Center, Kennett Square, PA (Ferracone).