For citations:

Trukhshina M.A., Sitnikova M.Yu. Myocardial dyssynchrony, heart failure aetiology, and QRS complex duration in patients with clinically manifested chronic heart failure. Russian Journal of Cardiology. 2013;(2):6-11. (In Russ.) https://doi.org/10.15829/1560-4071-2013-2-6-11