The last 3 decade of vaccination coverage in the Balkan and Eastern Europe countries with reference to the impact of the COVID-19 pandemic - Milos Stepovic; Viktorija Dragojevic Simic; Viktorija Dragojevic Simic; Ivana Zivanovic Macuzic; Radoje Simic; Radoje Simic; Stefan Vekic; Marija Sekulic; Snezana Radovanovic; Milena Maricic; Marija Sorak; Vesna Suljagic; et al. (Frontiers Media S.A., 2024)