For citations:
Ageev F.T., Ovchinnikov A.G., Ageeva S.F., Mareev V.Yu. What is “normal left ventricular ejection fraction” and its relationship with the pathogenesis and effectiveness of the treatment of heart failure. Kardiologiia. 2023;63(6):69-74. (In Russ.) https://doi.org/10.18087/cardio.2023.6.n2404
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