Patients with COVID-19 confirmed by RT-PCR or strong suspicion, defined as both typical clinical picture and typical chest CT scan. Presence of bilateral infiltrate on chest tomography and one of the following two: Patient with SpO2 below 94% in room air or Need for O2 by nasal catheter above 4L per min to maintain SpO2 above 94%

Patients with COVID-19 confirmed by RT-PCR or strong suspicion, defined as both typical clinical picture and typical chest CT scan. Presence of bilateral infiltrate on chest tomography and one of the following two: Patient with SpO2 below 94% in room air or Need for O2 by nasal catheter above 4L per min to maintain SpO2 above 94%