1. Department of Neurosurgery, Maria Sklodowska-Curie National Research Institute of Oncology, ul. W.K. Roentgena 5, 02-781 Warsaw, Poland
2. Department of Didactics and Medical Simulation, Medical University of Lublin, 20-954 Lublin, Poland
3. Department of Clinical Immunology, Medical University of Lublin, 20-954 Lublin, Poland
4. Department of Interventional Radiology and Neuroradiology, Medical University of Lublin, 20-954 Lublin, Poland
5. Department of Plastic, Reconstructive Surgery with Microsurgery, Medical University of Lublin, 20-954 Lublin, Poland
6. Department of Human, Clinical and Radiological Anatomy, Medical University, 20-954 Lublin, Poland