Baska, A., J. Kazik, D. Bojczuk, M. Racinowski, K. Leis, E. Mazur, K. Kałużny, and P. Gałązka. “Cardiac Amyloidosis: A Review”. Journal of Education, Health and Sport, vol. 9, no. 3, Mar. 2019, pp. 333-8, https://apcz.umk.pl/JEHS/article/view/6711.