For citations:

Kazakovtseva T.A., Shostak N.A. ECHOCARDIOGRAPHIC AND LABORATORY MARKERS OF CHRONIC HEART FAILURE: WHETHER IT IS POSSIBLE TO USE THEM IN RHEUMATIC MITRAL DISEASES? Rational Pharmacotherapy in Cardiology. 2009;5(1):33-36. (In Russ.) https://doi.org/10.20996/1819-6446-2009-5-1-33-36