1. Medicine Unit Companion Animal Clinic School of Veterinary Medicine Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
2. Laboratory of Pathology School of Veterinary Medicine Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
3. Surgery and Obstetrics Unit Companion Animal Clinic School of Veterinary Medicine Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
4. Diagnostic Laboratory School of Veterinary Medicine Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
5. Gastrointestinal Laboratory Texas A&M University College Station TX USA