A. Pachnia, B. Drop, and M. Polz-Dacewicz, “The epidemiological situation in Ukraine in terms of the implementation of preventive vaccinations according to the Protective Vaccination Program”, Curr. Issues Pharm. Med. Sci., vol. 35, no. 2, pp. 75–79, Aug. 2022, doi: 10.2478/cipms-2022-0014.