1. Division of Oncological Anesthesia and Intensive Care, Department of Anesthesia and Intensive Care, Azienda Ospedaliero Universitaria Careggi, Florence, Italy
2. Department of Ophthalmology, University of Florence, Florence, Italy
3. Division of Anesthesiology, Intensive Care and Pain medicine, Department of Health Sciences, University of Florence, Florence, Italy
4. Department of Surgery, Catholic University, Rome, Italy