1. Department of Histology and Embryology, Poznan University of Medical Sciences , Poznan , Poland
2. The School of Medicine, Medical Sciences and Nutrition, University of Aberdeen , Aberdeen , United Kingdom
3. Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos , Guarulhos, SP , Brazil
4. Department of Biomaterials and Experimental Dentistry, Poznan University of Medical Sciences , Poznan , Poland
5. Department of Anatomy, Poznan University of Medical Sciences , Poznan , Poland