1. Department of Anesthesia and Critical Care Medicine, St. Antonio and Biagio and Cesare Arrigo Hospital, Alessandria, Italy
2. Department of Anesthesiology, Keck Medical School of University of Southern California, Los Angeles, United States
3. Department of Sensory Organs, Sapienza University of Rome, Rome, Italy
4. Department of Emergency, Anesthesia and Critical Care, Michele and Pietro Ferrero Hospital, Verduno, Italy
5. Department of Anesthesiology and Emergency Sciences,, Policlinico Gemelli/IRCCS - Catholic University of Sacred Heart, Rome, Italy