Affiliation: | 1. Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, California;2. Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California-Davis, Davis, California;3. Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil;4. Escuela de Medicina Veterinaria, Facultad Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile |