Kobuszewski, Bartosz, Piotr Winciunas, Jacek Pruszyński, and Wojciech Stefan Zgliczyński. 2022. “Sickness Absence in 2019-2020 and the Activities of the Social Insurance Institution (ZUS) to Prevent Incapacity for Work”. Wiedza Medyczna 4 (1), 33-38. https://doi.org/10.36553/wm.112.