Rutkowski, Maciej, Anna Roszkowska, Lukasz Swierszcz, and Halina Piecewicz-Szczęsna. 2017. “Infection Clostridium Difficile As Increasing Epidemiological Issue”. Journal of Education, Health and Sport 7 (9):87-92. https://apcz.umk.pl/JEHS/article/view/4777.