1 University Hospitals of Leuven, Department of Anesthesiology, Herestraat 49, B-3000 Leuven, Belgium; University of Leuven, Biomedical Sciences Group, Department of Cardiovascular Sciences, KU Leuven, B-3000 Leuven, Belgium. Electronic address: Steve.coppens@uzleuven.be.
2 Department of Anesthesia and Intensive Care, GZA Hospitals, Oosterveldlaan 24, 2610 Antwerp, Belgium.
3 Department of Anesthesia, M Health Fairview University of Minnesota Medical Center, 500 Harvard St Se, Minneapolis, MN, USA.
4 Department of Anaesthesia and Pain Management, Kent and Canterbury Hospital, East Kent Hospitals University Foundation NHS Trust, Canterbury, UK.