1. Department of Anatomy , Poznan University of Medical Sciences , Poznan , Poland
2. Department of Biomaterials and Experimental Dentistry , Poznan University of Medical Sciences , Bukowska 70, 60-812 Poznan , Poland
3. Department of Histology and Embryology , Poznan University of Medical Sciences , Poznan , Poland
4. OMFS IMPATH Research Group, Department of Imaging & Pathology, Faculty of Medicine , University of Leuven and Oral &Maxillofacial Surgery, University Hospitals Leuven , Leuven , Belgium .
5. State Key Laboratory of Oral Diseases, West China College of Stomatology , Sichuan University , Chengdu , China .
6. Department of Obstetrics and Gynecology , University Hospital and Masaryk University , Obilni trh 11, 602 00 Brno , Czech Republic
7. Veterinary Center , Nicolaus Copernicus University in Toruń , Torun , Poland
8. Veterinary Research Institute , Brno Czech Republic
9. Department of Histology and Embryology , Wroclaw University of Medical Sciences , Wroclaw , Poland