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 General and Endocrine Surgery and Gastroenterological Oncology, Poznan University of Medical Sciences, Poznan, Poland;
4. Department of Reproductive Biology and Stem Cells, Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland