For citations:
Arutyunov A.G., Kolesnikova E.A., Ilyina K.V., Rylova A.K., Arutyunov G.P., Scherbacova N.V., Kulagina N.P. Selection of the optimal respiratory muscle training mode in patients with class II-III chronic heart failure. Kardiologiia. 2021;61(2):69-75. https://doi.org/10.18087/cardio.2021.2.n1356