1. Department of Histology and Embryology, Poznan University of Medical Sciences, Poland
2. Department of Anatomy, Poznan University of Medical Sciences, Poland
3. Institute of Veterinary Sciences, Poznan University of Life Sciences, Poland
4. Department of Obstetrics and Gynecology, University Hospital and Masaryk University, Brno, Czechia
5. Department of Histology and Embryology, Poznan University of Medical Sciences, Poland Poland
6. Department of Histology and Embryology, Wroclaw Medical University, Poland