CichoĊ„ska, D. ., Marczak, M. ., Raczkiewicz, A. ., & Sierocka, A. . (2009). International Classification of Functioning, Disability and Health (ICF) in medical certification of disability. Polish Journal of Public Health, 119(1), 7-13. https://czasopisma.umlub.pl/pjph/article/view/2125