1. Department of Gynecological Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland
2. Department of Gynecological Endocrinology, Medical University of Warsaw, 00-315 Warsaw, Poland
3. Department of Cancer Prevention, Medical University of Warsaw, 02-091 Warsaw, Poland
4. UCD School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland