1. Infectious and Tropical Diseases Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
2. Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
3. Intermediate Care Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
4. Department of Anesthesiology and Intensive Care, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
5. Department of Internal Medicine, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
6. Health Sciences Department, Section of Anesthesiology, Intensive Care and Pain Medicine - University of Florence, Florence, Italy