Data collection
pneumonia, acute respiratory failure
COVID-19 PNEUMONIA, PNEUMONIA, INFILTRATES, ACUTE RESPIRATORY FAILURE
Patients’ demographic and clinical data were recorded on a case report form, anonymized, and sent to the coordinating centre, where all the information was entered in the COVID-19 registry, as reported elsewhere [Clinical decisions (e.g., indicating intubation, respiratory support, and treatments) were not protocolized and were left to the discretion of attending physicians. COVID-19 diagnosis was confirmed by reverse transcription-polymerase chain reactions (rt-PCR) for SARS-CoV-2 and COVID-19 pneumonia was diagnosed through clinical signs of pneumonia with acute respiratory failure and lung infiltrates on chest imaging [