1. Anesthesia and Intensive Care Unit, Bufalini Hospital - AUSL della Romagna, Cesena, Italy
2. Department of Biomedical, Metabolic and Neural Sciences, University of Modena & Reggio Emilia, Modena, Italy
3. Anesthesia and Intensive Care Unit, Santa Maria delle Croci Hospital, AUSL della Romagna, Ravenna, Italy
4. Department of Pulmonary Medicine, Santa Maria delle Croci Hospital, AUSL della Romagna, Ravenna, Italy