1. Laboratories of Animal Virology (Headley, AA Alfieri, Fritzen, Silva, Bodnar, AF Alfieri), Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Paraná, Brazil
2. Laboratories of Parasitology (Garcia), Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Paraná, Brazil
3. Department of Pathobiology, Institute of Pathology and Forensic Veterinary Medicine, University of Veterinary Medicine, Vienna, Austria (Weissenböck)
4. Laboratory of Veterinary Pathology, School of Veterinary Medicine, Universidade Norte do Paraná, Arapongas, Paraná, Brazil (Okano)