1 Department of Anaesthesiology and Peri-operative Medicine, Ghent University and Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium. Electronic address: Sandrine.Herbelet@UGent.be.
2 Department of Anaesthesiology and Peri-operative Medicine, Ghent University and Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium.