1. Department of Mechanical and Aerospace Engineering, “Sapienza” University of Rome, 00184 Rome, Italy
2. Department of Anesthesiology and Surgical-Trauma Intensive Care, Hospital Clínic Universitari de Vacia, University of Valencia, 46010 Valencia, Spain
3. Department of Anesthesiology, Critical Care and Pain Medicine, Policlinico Umberto I, “Sapienza” University of Rome, 00185 Rome, Italy