Burek, Dawid, Aleksandra Paszkowska, Aleksandra Kujawa, Urszula Matuszewska, Aleksandra Nykowska, Katarzyna Beutler, and Bartosz Bijata. “Anemia Amongst Patients With Heart Failure - a Review”. Journal of Education, Health and Sport 54 (January 19, 2024): 43–57. Accessed June 28, 2025. https://apcz.umk.pl/JEHS/article/view/47860.