Gajos, Małgorzata, Patryk Włoszczyk, Monika Mioduska, Grzegorz Wałęsa, Agnieszka Kujawska, Joanna Androsiuk-Perkowska, Radosław Perkowski, et al. 2019. “Postoperative Functioning of Cardiac Patients. Diagnostic Methods of Postoperative Monitoring and Risk of Mortality”. Journal of Education, Health and Sport 9 (2):437-49. https://apcz.umk.pl/JEHS/article/view/6636.