For citations:

Gordeeva S.S., Sharypova S.Yu. Medical activity of middle-aged Russians in the «pre-pandemic» and «pandemic» periods. Health care of the Russian Federation. 2023;67(6):479-486. (In Russ.) https://doi.org/10.47470/0044-197X-2023-67-6-479-486. EDN: tgxfit