For citations:

Groznova O.S., Leontyeva I.V., Todorova O.V. Sildenafil in the treatment of pulmonary hypertension. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2014;59(6):93-97. (In Russ.) https://doi.org/10.21508/1027-4065-2014-59-6-103-110