1. Department of Gynecological Endocrinology, Poznan University of Medical Sciences, Poznan, Poland;
2. Students Scientific Society of the Department of Gynecological Endocrinology, Poznan University of Medical Sciences, Poznan, Poland;
3. Department of Reproductive Medicine and Child Development, Division of Gynecology and Obstetrics, University of Pisa, Pisa, Italy;
4. Department of Medical Genetics, The Children’s Memorial Health Institute, Warsaw, Poland