1. Department of Obstetrics and Gynecology, First Faculty of Medicine, Charles University and General University Hospital, 128 08 Prague, Czech Republic
2. Department of Gynecology and Obstetrics, University Hospital Brno, 602 00 Brno, Czech Republic
3. Department of Midwifery, Faculty of Health Sciences, Palacky University Olomouc, 779 00 Olomouc, Czech Republic
4. Department of Biomedical Technology, Faculty of Biomedical Engineering, Czech Technical University in Prague, 272 01 Kladno, Czech Republic
5. Department of Social Work, Faculty of Social and Economics Studies, J. E. Purkyně University, 400 96 Ústí nad Labem, Czech Republic