Giancarlo Garuti1, Jessica Mandrioli2, Antonio M Esquinas3. 1. Pneumology Unit, Santa Maria Bianca Hospital, Mirandola, Modena, Italy. g.garuti@ausl.mo.it. 2. Department of Neuroscience, St. Agostino-Estense Hospital, Modena, Italy. j.mandrioli@ausl.mo.it. 3. Intensive Care Unit, Hospital Morales Meseguer, Murcia, Spain.