Effect of comorbid conditions on the course of COVID-19 in patients with chronic diseases of the cardiovascular and pulmonary systemsE. N. Tashkenbaeva, G. A. Abdieva, A. I. Muhiddinov, D. D. Khaydarova and B. M. TogaevaE3S Web of Conf., 413 (2023) 03028DOI: https://doi.org/10.1051/e3sconf/202341303028