Grzelak-Kostulska E, Sypion-Dutkowska N, Michalski T. Changes in the health situation of the population of Poland following the accession to the European Union (Compared to central and eastern european countries). JGPS [Internet]. 2017 Mar. 31 [cited 2024 May 17];7(1):24-38. Available from: https://czasopisma.bg.ug.edu.pl/index.php/JGPS/article/view/3650