1. Institute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland
2. Department of Anesthesiology, Antwerp University Hospital, Edegem, Belgium
3. Department for Anesthesia and Intensive Care, School of Medicine, University of Nis, Nis, Serbia
4. Emergency County Hospital Cluj-Napoca, Orthopedic and Trauma Clinic, Anaesthesia and Intensive Care Department, Cluj-Napoca, Romania
5. Department of Anesthesia and Intensive Care I, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania; Outcomes Research Consortium, Cleveland, Ohio
6. Department of Anesthesia, Ponderas Hospital, Centre of Excellence for Bariatric and Metabolic Surgery, University of Medicine and Pharmacy, Bucharest, Romania
7. Department of Anesthesiology and Critical Care, Ben Gurion University of the Negev, Beer Sheva, Israel