1. Cytology Diagnostic Services, Institute of Biomedical Sciences Abel Salazar (ICBAS-UP), University of Porto, Porto, Portugal
2. Veterinary Clinic, Institute of Biomedical Sciences Abel Salazar (ICBAS-UP), University of Porto, Porto, Portugal
3. Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS-UP), University of Porto, Porto, Portugal
4. Animal Health Ireland, Carrick-on-Shannon, Ireland