1. Department of Anatomy , Poznan University of Medical Sciences , Poznan , Poland
2. Department of Toxicology , Poznan University of Medical Sciences , Poznan , Poland
3. Department of Histology and Embryology , Poznan University of Medical Sciences , Poznan , Poland
4. Division of Perinatology and Women’s Diseases , Poznan University of Medical Sciences , Poznan , Poland
5. Department of Reproduction , Poznan University of Medical Sciences , Poznan , Poland
6. Department of Obstetrics and Gynecology , University Hospital and Masaryk University , Brno , Czech Republic