For citations:
Komolyatova V.N., Makarov L.M., Kiseleva I.I., Besportochny D.A., Dmitrieva A.V., Balykova L.A., Parshina T.S. Changing QT interval in orthostasis — new diagnostic marker of syndrome of extended QT interval. Medical alphabet. 2019;2(21):18-21. (In Russ.) https://doi.org/10.33667/2078-5631-2019-2-21(396)-18-21