1. Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering , Silesian University of Technology , Roosevelt 40 st., 41-800 Zabrze, Oberschlesien , Poland ; Tel.: +480791515766
2. Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering , Silesian University of Technology , Roosevelt 40 st., 41-800 Zabrze, Oberschlesien , Poland