1. Clinic of Companion Animal Medicine; Aristotle University of Thessaloniki; Stavrou Voutyra 11 54627 Thessaloniki Greece
2. Clinic of Surgery; Aristotle University of Thessaloniki; Stavrou Voutyra 11 54627 Thessaloniki Greece
3. Laboratory of Clinical Pathology, Faculty of Veterinary Medicine; Aristotle University of Thessaloniki; Stavrou Voutyra 11 54627 Thessaloniki Greece
4. Department of Epidemiology and Economics of Animal Production, Faculty of Veterinary Medicine; University of Thessaly; Terma Trikalon 43100 Karditsa Greece