Andreieva, Iana, Dmitro Myrnyi, Mikolay Surmilo, and Olha Riznyk. “Clinical Features of Heart Failure With Reduced Ejection Fraction in Patients With Obstructive Sleep Apnea Syndrome”. ScienceRise: Medical Science, no. 2 (29) (April 2, 2019): 10–14. Accessed May 5, 2024. https://journals.uran.ua/sr_med/article/view/161853.