1 From the Dipartimento di Scienze Chirurgiche e Diagnostiche Integrate, Policlinico San Martino, IRCCS per l'Oncologia, Università degli Studi di Genova, Genova, Italia (LB, CR, PP) and Department of Anaesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany (MGdA).