1. Department of Anatomy, Histology and Embryology Faculty of Veterinary Medicine University of Veterinary Sciences Brno Brno Czech Republic
2. Department of Physiology Faculty of Veterinary Medicine University of Veterinary Sciences Brno Brno Czech Republic
3. Department of Biostructure and Animal Physiology Faculty of Veterinary Medicine Wrocław University of Environmental and Life Sciences Wrocław Poland
4. Zoo Ljubljana Ljubljana Slovenia