Shystval, N.F., V.P. Maliy, PolykchiА.К., D.E. Ryspaeva, and DmitrenkoV.М. 1. “ELECTROCARDIOGRAPHY CHANGES IN PATIENTS WITH ACUTE DIPHTHERIC MYOCARDITIS”. The Journal of V. N. Karazin Kharkiv National University, Series "Medicine", no. 4 (1), 81-83. https://periodicals.karazin.ua/medicine/article/view/7363.