Rutkowski, Maciej, Łukasz Świerszcz, Anna Roszkowska, Anna Taracha, and Halina Piecewicz-Szczęsna. 2017. “Measles – Are We Dealing With a New Epidemy in Poland?”. Journal of Education, Health and Sport 7 (9):251-57. https://apcz.umk.pl/JEHS/article/view/4843.