1. Department of Medical Sciences, University
of Wisconsin, Madison, WI 43210, USA
2. Departamento de Medicina Veterinária,
Universidade Federal do Paraná, Curitiba, PR 80035, Brazil
3. Departamento de Medicina Veterinária
Preventiva, Universidade Estadual de Londrina, Londrina, PR 86051, Brazil
4. Clinilab, Curitiba, PR 82540, Brazil
5. University of Illinois, Urbana, IL 61802,
USA
6. Department of Comparative Pathobiology,
School of Veterinary Medicine, Purdue University, 725 Harrison Street, West Lafayette, IN
47907, USA