For citations:

Vdovenko D.V., Libov I.A., Libis R.A. Assessment of Function of the Left Heart Myocardium by Tissue Doppler Imaging and Speckle Tracking Echocardiography in Patients with Chronic Heart Failure with Preserved Left Ventricular Ejection Fraction. Kardiologiia. 2019;59(2):17-23. (In Russ.) https://doi.org/10.18087/cardio.2019.2.10227