For citations:
Shkarin V.V., Kovalishena O.V., Murtayeva A.A., Sergeeva A.V. A new coronavirus infection: aspects of complex comorbidity. Epidemiology and Vaccinal Prevention. 2022;21(2):98-107. (In Russ.) https://doi.org/10.31631/2073-3046-2022-21-2-98-107