1 Department of Anesthesiology and Pain Medicine, Jessa Hospital, Hasselt, Belgium. Electronic address: kristof.nijs@hotmail.com.
2 Department of Gynecology and Obstetrics, University Hospitals Leuven, Leuven, Belgium.
3 Department of Anesthesiology and Pain Medicine, Jessa Hospital, Hasselt, Belgium.
4 Department of Anesthesiology and Pain Medicine, University Hospitals Leuven, Leuven, Belgium.
5 Department of Anesthesiology and Pain Medicine, Jessa Hospital, Hasselt, Belgium; Limburg Clinical Research Program, Hasselt University and Jessa Hospital, Belgium; Department of Anesthesiology, Maastricht University Medical Center, Maastricht, the Netherlands.