1. Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais State, Brazil (A Wouters, F Wouters, Varaschin)
2. Faculty of Veterinary Medicine, Cuiabá University, Cuiabá, Mato Grosso, Brazil (Boabaid)
3. Department of Clinical Pathology, Faculty of Veterinary, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (Fredo, Watanabe, Driemeier)