Medak, E., A. Niedzielski, K. Antonik, A. Horoch, and M. Brodowicz-Król. “The Polish State of Transplantation”. Journal of Education, Health and Sport, vol. 8, no. 12, Dec. 2018, pp. 11-18, https://apcz.umk.pl/JEHS/article/view/24643.