1. Laboratory of Molecular Neurobiology Nencki Institute of Experimental Biology of the Polish Academy of Sciences Warsaw Poland
2. Department of Neurosurgery Medical University of Warsaw Warsaw Poland
3. Department of Neurosurgery Military Institute of Medicine Warsaw Poland
4. Department of Oncology Military Institute of Medicine Warsaw Poland
5. The Maria Sklodowska‐Curie National Research Institute of Oncology Warsaw Poland
6. Department of Neurosurgery Andrzej Frycz Modrzewski Krakow University Krakow Poland
7. Department of Neurosurgery Medical University of Silesia, Regional Hospital Sosnowiec Poland
8. Department of Neurosurgery Mazovian Brodnowski Hospital Warsaw Poland
9. Department of Neurosurgery and Nervous System Trauma Centre of Postgraduate Medical Education Warsaw Poland
10. Medical University of Gdansk Gdansk Poland
11. Department of Neurosurgery Copernicus PL Gdansk Poland
12. Department of Psychology and Sociology of Health and Public Health School of Public Health Collegium Medicum University of Warmia – Mazury Olsztyn Poland
13. Institute of Psychiatry and Neurology Warsaw Poland
14. Faculty of Medical and Health Sciences Siedlce University of Natural Sciences and Humanities Siedlce Poland
15. Gdansk University of Technology, Faculty of Chemistry Gdansk Poland
16. Department of Pathology The Children's Memorial Health Institute Warsaw Poland
17. Department of Neurosurgery Henry Ford Cancer Institute Detroit Michigan USA