1. Gynecology Specialised Practise, 60-682 Poznań, Poland
2. Department of Obstetrics and Gynecology, District Public Hospital in Poznan, 60-479 Poznań, Poland
3. Gynecology Specialised Practise, 60-408 Poznań, Poland
4. Department of Maternal and Child Health, Poznan University of Medical Sciences, 60-535 Poznan, Poland
5. Department of Immunobiology, Poznan University of Medical Sciences, 60-806 Poznań, Poland
6. Department of Gynecological Endocrinology, Jagiellonian University Medical College, 31-008 Cracow, Poland
7. Doctoral School, Poznan University of Medical Sciences, 61-701 Poznań, Poland