For citations:
Santalova G.V., Lebedev P.A., Garanin A.A., Kuzin M.E. Problems of chronic rheumatic heart disease diagnosis at the present stage. Clinical Medicine (Russian Journal). 2021;99(4):259-265. (In Russ.) https://doi.org/10.30629/0023-2149-2021-99-4-259-265