For citations:
Polyakov D.S., Fomin I.V., Belenkov Yu.N., Mareev V.Yu., Ageev F.T., Artemjeva E.G., Badin Yu.V., Bakulina E.V., Vinogradova N.G., Galyavich A.S., Ionova T.S., Kamalov G.M., Kechedzhieva S.G., Koziolova N.A., Malenkova V.Yu., Malchikova S.V., Mareev Yu.V., Smirnova E.A., Tarlovskaya E.I., Shcherbinina E.V., Yakushin S.S. Chronic heart failure in the Russian Federation: what has changed over 20 years of follow-up? Results of the EPOCH-CHF study. Kardiologiia. 2021;61(4):4-14. https://doi.org/10.18087/cardio.2021.4.n1628