inclusion criteria: 1. informed consent from patient or legal representative. 2. male or female, aged ≥ 18 years; 3. laboratory confirmation of 2019-ncov infection by reverse-transcription polymerase chain reaction (rt-pcr) from any diagnostic sampling source; 4. signs of respiratory failure requiring oxygen therapy 5. hospitalized for up to 36h with non-invasive ventilation 6. negative result for pregnancy test (if applicable).

inclusion criteria: 1. informed consent from patient or legal representative. 2. male or female, aged ≥ 18 years; 3. laboratory confirmation of 2019-ncov infection by reverse-transcription polymerase chain reaction (rt-pcr) from any diagnostic sampling source; 4. signs of respiratory failure requiring oxygen therapy 5. hospitalized for up to 36h with non-invasive ventilation 6. negative result for pregnancy test (if applicable).

inclusion criteria: informed consent from patient or legal representative. male or female, aged ≥ 18 years; laboratory confirmation of 2019-ncov infection by reverse-transcription polymerase chain reaction (rt-pcr) from any diagnostic sampling source; signs of respiratory failure requiring oxygen therapy hospitalized for up to 36h with non-invasive ventilation negative result for pregnancy test (if applicable).

inclusion criteria: informed consent from patient or legal representative. male or female, aged ≥ 18 years; laboratory confirmation of 2019-ncov infection by reverse-transcription polymerase chain reaction (rt-pcr) from any diagnostic sampling source; signs of respiratory failure requiring oxygen therapy hospitalized for up to 36h with non-invasive ventilation negative result for pregnancy test (if applicable).

inclusion criteria: 1. informed consent from patient or legal representative. 2. male or female, aged ≥ 18 years; 3. laboratory confirmation of 2019-ncov infection by reverse-transcription polymerase chain reaction (rt-pcr) from any diagnostic sampling source; 4. signs of respiratory failure requiring oxygen therapy 5. hospitalized for up to 36h with non-invasive ventilation 6. negative result for pregnancy test (if applicable).

inclusion criteria: 1. informed consent from patient or legal representative. 2. male or female, aged ≥ 18 years; 3. laboratory confirmation of 2019-ncov infection by reverse-transcription polymerase chain reaction (rt-pcr) from any diagnostic sampling source; 4. signs of respiratory failure requiring oxygen therapy 5. hospitalized for up to 36h with non-invasive ventilation 6. negative result for pregnancy test (if applicable).