Willingness to participate in the studyPeople over the age of 18People with severe form of COVID-19 disease (shortness of breath, respiratory frequency ≥ 30 / min,, blood oxygen saturation ≤ 93%,, partial pressure of arterial oxygen to fraction of inspired oxygen ratio <300,, percentage of pulmonary involvement more than 50 in 24-48 hours,)

Willingness to participate in the studyPeople over the age of 18People with severe form of COVID-19 disease (shortness of breath, respiratory frequency ≥ 30 / min,, blood oxygen saturation ≤ 93%,, partial pressure of arterial oxygen to fraction of inspired oxygen ratio <300,, percentage of pulmonary involvement more than 50 in 24-48 hours,)