For citations:
Groznova O.S., Chernykh N.Yu., Tarasova A.A. Diagnosis of systolic myocardial dysfunction: analysis of myocardial deformity. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2018;63(2):53-57. (In Russ.) https://doi.org/10.21508/1027-4065-2018-63-2-53-57