Pabis G, Strzelczyk M, Koziołek I, Bętkowska P, Wziątek J, Kowalik P, et al. Diphtheria: A Disease of the Past or a Public Health Threat? Prevention Strategies in the 21st Century. Qual Sport [Internet]. 2025 Aug. 10 [cited 2025 Dec. 22];44:62931. Available from: https://apcz.umk.pl/QS/article/view/62931