[1] Univ Genoa, Dept Surg Sci & Integrated Diagnost, IRCCS AOU San Martino IST, Genoa, Italy
[2] Univ Naples Federico II, Dept Anesthesia & Intens Care Med, Naples, Italy
[3] Univ Bonn, Dept Anesthesiol & Intens Care Med, Bonn, Germany
[4] Univ Cattolica Sacro Cuore, Dept Intens Care & Anesthesiol, Rome, Italy