Gogayeva, O.K., Drobnich, M.A., Lytvyn, N.O., Nastenko, O.O. and Salo, R.I. 2021. Comorbidities in Patients before Surgical Myocardial Revascularization: Current State of the Problem. Part I. Ukrainian Journal of Cardiovascular Surgery. 4 (45) (Dec. 2021), 10-17. DOI:https://doi.org/10.30702/ujcvs/21.4512/GD048-1017.