1. Internal Medicine Service, Anicura Hospital Veterinario Valencia Sur Valencia Spain
2. Department of Animal Medicine and Surgery, Veterinary FacultyComplutense University of Madrid Madrid Spain
3. Internal Medicine Service, Hospital Veterinari Catalunya Odena Spain
4. Department of Animal Pathology, University of Las Palmas de Gran Canaria Las Palmas de Gran Canaria Spain
5. Department of Medicine and Epidemiology, School of Veterinary MedicineUniversity of California Davis California USA