1. Department of Histology and Embryology, Jessenius Faculty of Medicine Martin, Comenius University, Martin, Slovak Republic
2. Department of Medical Biology, Jessenius Faculty of Medicine Martin, Comenius University, Martin, Slovak Republic
3. Laboratory of Pathological anatomy, Alpha medical, a.s., Martin, Slovak Republic
4. Department of Anatomy, Jessenius Faculty of Medicine Martin, Comenius University, Martin, Slovak Republic
5. Department of Anatomy, P. J. Safarik Univerzity, Faculty of Medicine, Kosice, Kosice, Slovak Republic
6. Institute of Laboratory Medicine, St. Elizabeth University of Health and Social Sciences, Bratislava, Slovak Republic and Institute of Forensic Medicine, Faculty of Medicine Comenius University, Bratislava, Slovak Republic