1. Department of Anesthesiology, Onze-Lieve-Vrouw Hospital, Aalst, Belgium; Department of Basic and Applied Medical Sciences, Ghent University, Ghent, Belgium; Department of Anesthesiology, University Hospital Leuven, Leuven, Belgium; and Department of Cardiovascular Sciences, Catholic University Leuven, Leuven, Belgium.
2. Department of Anesthesiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.