1. Laboratories of Animal Pathology (Headley, Oliveira, Michelazzo), Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Paraná, Brazil
2. Molecular Biology (Balbo, AF Alfieri, AA Alfieri), Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Paraná, Brazil
3. Faculty of Veterinary Medicine, Universidade Norte do Paraná, Arapongas, Paraná, Brazil (Okano, Marcasso, Negri Filho, Rodrigues)
4. Large Animal Health Laboratory, Faculty of Veterinary Medicine, Universidade Federal de Uberlândia, Minas Gerais, Brazil (Baptista, Saut)