For citations:
Kolosova K.S., Grigoreva N.Y., Kosuga Y.I. High-frequency electrocardiography as an additional method for diagnosing myocardial ischemia in patients with СHD of various ages. South Russian Journal of Therapeutic Practice. 2020;1(3):63-67. (In Russ.) https://doi.org/10.21886/2712-8156-2020-1-3-63-67