BŁASZCZYSZYN, Katarzyna, BOLEK, Monika, MUC, Katarzyna, HOPEJ, Natalia, DOBRZENIECKI, Krzysztof and TUREK, Kacper. The pertussis paradox: why are cases increasing despite vaccination efforts?. Quality in Sport. Online. 11 July 2024. Vol. 16, p. 52583. [Accessed 18 July 2024]. DOI 10.12775/QS.2024.16.52583.