Voinarovska, G. and Asanov, E. 2020. Ischemic heart disease and chronic obstructive pulmonary disease: the topical problem of comorbidity in internal medicine. ScienceRise: Medical Science. 3 (36) (May 2020), 20–24. DOI:https://doi.org/10.15587/2519-4798.2020.203968.