For citations:
Tsiberkin A.I., Golovatyuk K.А., Bykova E.S., Andreeva A.T., Vashukova M.A., Tsoy U.A., Karonova T.L. Hypokalemia and the renin-angiotensinaldosterone system activity in COVID-19 patients. "Arterial’naya Gipertenziya" ("Arterial Hypertension"). 2021;27(4):457-463. (In Russ.) https://doi.org/10.18705/1607-419X-2021-27-4-457-463