Ballyuzek , M. F., A. K. Ionova, M. V. Mashkova, I. G. Semenova, and I. V. Sukhova. “Remote Consequences of Polychemical and Radiation Therapy: Cardiac Valve Disease Complicated by Infective Endocarditis. Diagnostic and Management Problems”. OncoReview, Vol. 4, no. 3(15), Sept. 2014, pp. 100-7, https://journalsmededu.pl/index.php/OncoReview/article/view/367.