1. Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Torun, Poland
2. Neuro Repair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland and Department of Anatomy, Faculty of Medicine, University of Vermia and Masuria in Olsztyn, Olsztyn, Poland
3. Department of Anatomy, Faculty of Medicine, University of Vermia and Masuria in Olsztyn, Olsztyn, Poland
4. Department of Anatomy, Chair of Anatomy and Physiology, Physical Education Faculty, Jozef Pilsudski University of Physical Education in Warsaw, Warsaw, Poland
5. Department of Pathophysiology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Torun, Poland