For citations:
Popova T.E., Tikhonova O.G., Romanova A.N., Tappakhov A.A., Andreev M.E., Konnikova E.E. Analysis of the epidemiological situation on COVID-19: third and fourth waves. Yakut Medical Journal. 2021;(4):72-75. https://doi.org/10.25789/YMJ.2021.76.17
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