1. Department of Anesthesiology, University Medical Center Göttingen, Göttingen, Germany;
2. Department of Health Sciences, University of Milan, Milan, Italy;
3. Section of Anaesthesiology, Intensive Care and Pain Medicine, Department of Health Sciences, University of Florence, Florence, Italy;
4. IRCCS San Raffaele Scientific Institute, Milan, Italy;
5. Department of Anesthesia, Intensive Care and Emergency, City of Health and Science Hospital, Turin, Italy; and
6. Department of Adult Critical Care, Guy’s and St. Thomas’ NHS Foundation Trust, Centre for Human and Applied Physiological Sciences, King’s College London, London, United Kingdom