For citations:
Shubik Yu.V., Korneev A.B., Morozov A.N. Number of ventricular premature beats and other causes of cardiomyopathy associated with arrhythmia: case reports. Journal of Arrhythmology. 2023;30(4):e11-e15. (In Russ.) https://doi.org/10.35336/VA-1237