1. Department of Midwifery, Centre of Postgraduate Medical Education, 01-004 Warsaw, Poland
2. Department of Social Pedagogy, The Maria Grzegorzewska University, 02-353 Warsaw, Poland
3. Department of Medical Statistics, School of Public Health, Centre of Postgraduate Medical Education, 01-826 Warsaw, Poland
4. Foundation for Supporting Midwives, 00-112 Warsaw, Poland
5. Institute of Psychology, Department of Christian Philosophy, Cardinal Stefan Wyszyński University, 01-938 Warsaw, Poland
6. Department of Obstetrics and Gynecology Didactics, Faculty of Health Sciences, Medical University of Warsaw, 00-581 Warsaw, Poland