Confirmed cases of New coronavirus infection or COVID-19 who are 18 years and older; Not more than 14 days from the onset of symptoms Bilateral lung involvement in imaging findings Moderate to severe acute respiratory distress syndrome Decreased PaO2 to FiO2 ratio

Confirmed cases of New coronavirus infection or COVID-19 who are 18 years and older; Not more than 14 days from the onset of symptoms Bilateral lung involvement in imaging findings Moderate to severe acute respiratory distress syndrome Decreased PaO2 to FiO2 ratio