1. Departamento de Veterinária Universidade Federal de Viçosa Viçosa Minas Gerais Brazil
2. Division of Comparative Pathology, Department of Pathology & Laboratory Medicine University of Miami Miller School of Medicine Miami Florida USA
3. Departamento de Medicina Veterinária Universidade Federal do Paraná Curitiba Puerto Rico Brazil
4. The American Eagle Foundation Pigeon Forge Tennessee USA