For citations:
Akgul F., Batyraliev T.A., Fettser D.V., Seyfeli E., Arystan A.G., Seydaliyeva T., Gali E., Yalcin F., Sidorenko B.A. Decreased Heart Rate Variability in Sickle Cell Anemia as Effect of Pulmonary Arterial Hypertension. Kardiologiia. 2019;59(4):39-44. (In Russ.) https://doi.org/10.18087/cardio.2019.4.10237