1. Respiratory Unit, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
2. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
3. Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Critical Care and Sleep Medicine, Center for Pulmonary Infection Research and Treatment, Yale School of Medicine, New Haven, Connecticut