1. Laboratory of Neural Regeneration, Department of Anatomy, Histology, and Embryology, University of Szeged, Szeged, Hungary.
2. Department of Traumatology, Sándor Péterfy Hospital, Budapest, Hungary.
3. Department of Traumatology, Albert Szent-Györgyi Clinical Centre, University of Szeged, Szeged, Hungary.
4. Department of Neurophysiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.