For citations:
Ponomareva O.V., Smirnova E.A., Shukis K.A. Chronic Heart Failure with Preserved Ejection Fraction in A Comorbid Patient: Issues in Verification of A «Difficult» Diagnosis. The Russian Archives of Internal Medicine. 2025;15(3):233-240. https://doi.org/10.20514/2226-6704-2025-15-3-233-240. EDN: WHQDOA