For citations:

Galyavich A.S., Nedogoda S.V., Arutyunov G.P., Belenkov Yu.N. About the classification of heart failure. Russian Journal of Cardiology. 2023;28(9):5584. (In Russ.) https://doi.org/10.15829/1560-4071-2023-5584. EDN: ZGXELX