1 Department of Anesthesiology, Intensive Care and Pain Clinic, Vall d'Hebron Trauma, Rehabilitation and Burns Hospital, Autonomous University of Barcelona, Barcelona, Spain.
2 Department for Trauma and Orthopedic Surgery, Cologne-Merheim Medical Center, Witten/Herdecke University, Campus Cologne-Merheim, Cologne, Germany.
3 Department of Anesthesiology, Rhenish-Westphalian Technical University, Aachen University Hospital, Aachen, Germany.
4 Clinic for Anesthesiology and Interdisciplinary Intensive Care Medicine, Sana Heart Center Cottbus, Cottbus, Germany; Ruhr University of Bochum, Bochum, Germany.
5 Division of Anesthesiology, Hospital Linth, Kantonsspital St. Gallen, St. Gallen, Switzerland.
6 Department of Anesthesiology, Critical Care, and Surgery, Duke University School of Medicine, Durham, North Carolina.
7 Department of Anesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.