1. 1st Faculty of Medicine Institute of Sexology Charles University Prague Czech Republic
2. Faculty of Medicine Department of Sexology Psychiatric Clinic Charles University Pilsen Czech Republic
3. Department of Pathology Znojmo Hospital Znojmo Czech Republic
4. Faculty of Veterinary Medicine Department of Anatomy, Histology and Embryology University of Veterinary and Pharmaceutical Sciences Brno Brno Czech Republic
5. Faculty of Medicine Department of Psychology Charles University Pilsen Czech Republic