1. Department of Anatomy, Poznań University of Medical Sciences , Poznań , Poland
2. School of Medicine, Medical Sciences and Nutrition, University of Aberdeen , Aberdeen , United Kingdom
3. Department of Histology and Embryology, Poznań University of Medical Sciences , Poznań , Poland
4. Department of Obstetrics and Gynecology, University Hospital and Masaryk University , Brno Czech Republic
5. Department of Biomaterials and Experimental Dentistry, Poznan University of Medical Sciences , Poznań , Poland