For citations:
Chomakhidze P.Sh., Mozzhuhina N.V., Poltavskaya M.G., Sedov V.P., Syrkin A.L. Functional Diagnostic Methods in Cardiac Prognosis in Major Abdominal Surgery in Patients with Heart Disease or Over 65 Years Old. Kardiologiia. 2019;59(1):69-78. (In Russ.) https://doi.org/10.18087/cardio.2019.1.10210