1. From The Clinica Veterinaria dell'Orologio-Centro Oncologico Veterinario; Sasso Marconi (BO); Italy
2. Faculty of Veterinary Science; The University of Melbourne; 250 Princes Highway; Werribee; VIC 3030; Australia
3. Department of Veterinary Pathology, School of Veterinary Science; University of Liverpool; UK
4. Department of Veterinary Medical Sciences; University of Bologna; Italy