1. Dip. Scienze Veterinarie e Sanità Pubblica; University of Milan; Milan Italy
2. Clinica Veterinaria Orobica- Bergamo and Dip. Patologia; Diagnostica e Clinica Veterinaria; University of Perugia; Perugia Italy
3. Ospedale Veterinario Gregorio VII - Roma and Dip. Patologia; Diagnostica e Clinica Veterinaria; University of Perugia; Perugia Italy
4. Institute for Biomedical Technologies - National Research Council of Italy; Segrate (Milan) Italy
5. Department of Medicine and Epidemiology and Population Health and Reproduction; School of Veterinary Medicine; University of California - Davis; Davis CA
6. Dip. Patologia; Diagnostica e Clinica Veterinaria; University of Perugia; Perugia Italy