For citations:

Mirolyubov L.M. Kazan version of the classification of congenital heart defects of John Kirklin. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2019;64(5):246-249. (In Russ.) https://doi.org/10.21508/1027-4065-2019-64-5-246-249