For citations:

Baryshnikova I.Yu., Shmalts A.A. Diagnosis of pulmonary hypertension associated with congenital heart disease. Part 2. Echocardiography. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2021;66(6):23-32. (In Russ.) https://doi.org/10.21508/1027-4065-2021-66-6-23-32