1. Clinic of Medicine, Faculty of Veterinary Medicine, School of Health Sciences, University of Thessaly, Trikalon 224, 43100 Karditsa, Greece
2. Farma Messinias—Provision of Swine Herd Health Services, 12241 Egaleo, Greece
3. Laboratory of Anatomy Histology and Embryology, Faculty of Veterinary Medicine, School of Health Sciences, University of Thessaly, Trikalon 224, 43100 Karditsa, Greece