For citations:
Shilin D.S., Shapovalov Yu.K., Shapovalov K.G. Blood circulation changes associated with switching to non-invasive ventilation in COVID-19 patients. Acta Biomedica Scientifica. 2021;6(6-2):51-57. (In Russ.) https://doi.org/10.29413/ABS.2021-6.6-2.6