For citations:

Matveeva M.G., Alekhin M.N. The signifi cance of global longitudinal strain of left ventricular in the classifi cation of stages of aortic stenosis based on the extravalvular cardiac damage. Clinical Medicine (Russian Journal). 2021;99(3):187-191. (In Russ.) https://doi.org/10.30629/0023-2149-2021-99-3-187-191