1. Large Animal Veterinary Teaching Hospital College of Agronomy and Veterinary Medicine Universidade de Brasília Brasília DF Brazil
2. Veterinary Pathology Laboratory College of Agronomy and Veterinary Medicine Universidade de Brasília Brasília DF Brazil
3. Department of Veterinary Clinics and Surgery Veterinary CollegeUniversidade Federal de Minas Gerais Belo Horizonte MG Brazil