Wilk, K., Sowada, C. and Kruk, W. (2013) “Ageing of Polish society and NFZ expenses on long-term care from 2004 to 2010 – regional differentiation”, European Journal of Clinical and Experimental Medicine, 11(3), pp. 279–287. Available at: https://journals.ur.edu.pl/ejcem/article/view/12627 (Accessed: 27 February 2026).