METHODS
All cases came from Spedali Civili di Brescia, a tertiary care center with several dedicated COVID-19 units and a high number of COVID-19 patients (more than 10.000 in the province of Brescia), leading to a growing experience in the management of the coronavirus pandemic. All the included patients presented with typical COVID-19 clinical features (fever, fatigue, dry cough or dyspnea) with either a positive SARS-CoV-2 nasopharyngeal swab or a high resolution lung CT highly suggestive of viral pneumonia.