1. Clinic of Medicine, Faculty of Veterinary Medicine, University of Thessaly, Karditsa, Greece.
2. Laboratory for Experimental Surgery and Surgical Research, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
3. Diagnostic Laboratory, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.
4. Department of Obstetrics-Reproduction and Herd Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.