1 Respiratory and Critical Care Unit Department of Clinical, Integrated and Experimental Medicine (DIMES) University Hospital St. Orsola-Malpighi Bologna, Italy School of Medicine Alma Mater Studiorum University of Bologna Bologna, Italy stefano.nava@aosp.bo.it.
2 Respiratory and Critical Care Unit Department of Clinical, Integrated and Experimental Medicine (DIMES) University Hospital St. Orsola-Malpighi Bologna, Italy School of Medicine Alma Mater Studiorum University of Bologna Bologna, Italy.
3 Respiratory and Critical Care Unit University Hospital St. Orsola-Malpighi Bologna, Italy.