1. Animal Pathology Department, Veterinary Faculty, Zaragoza University, Miguel Servet 177, 50013, Zaragoza, Spain
2. Clinical Immunology Laboratory, Veterinary Faculty, Zaragoza University, Zaragoza, Spain
3. Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
4. Menescalia Veterinary Clinic, Valencia, Spain